Overseas Online Shopping & Personal Imports in Japan 2026: iHerb, SHEIN, Temu and Customs Duties

With overseas shopping, the listed price doesn't tell you enough

iHerb, SHEIN, Temu, AliExpress, Amazon US, eBay: buying directly from overseas (cross-border e-commerce, or "personal importing") gets you things you'll never see on Japanese store shelves, and things that are clearly cheaper than in Japan. But the big difference from ordinary Japanese online shopping is that the price shown in your cart is not what you'll end up paying. If you hit the order button just because it looks cheap, shipping, customs duty and consumption tax get added later, and it's very common to end up paying more than you would have in Japan.

With Japanese online stores, you can take for granted that the listed price is basically the total, delivery is next day, and returns are easy. None of that applies to overseas shopping. So before listing the sites, this article is built around three pitfalls unique to overseas shopping: the true total including shipping and duties, delivery time and receiving your parcel, and fakes and wrong sizes. We then look at each site in terms of how it handles these three.

What the main overseas shopping sites are like, and what to buy where

It's not about which site is cheapest. Each site has clear strengths and weaknesses depending on the category. There's no point looking for supplements on SHEIN, and you won't find the latest limited-edition sneakers on Temu. Use the table below to find the site that fits what you want to buy. Each row links to a detailed guide.

Roughly speaking: for cheap consumables in bulk, iHerb and Temu; for lots of clothes, SHEIN; for gadgets and DIY gear, AliExpress; for one-off items you can't get in Japan, Amazon US and eBay. Even though it's all "overseas shopping," the tricks differ completely by site, so let's go through them one by one.

Getting the most out of each site

This is the practical part. Each site differs in where money leaks out and where people trip up, so learning how to shop to suit each one cuts your mistakes dramatically.

iHerb — It's all about the free-shipping threshold and bulk buying

Strong in supplements, protein, organic foods and cosmetics, with a Japanese-language site and Japanese support, iHerb is an easy place to start shopping from overseas. The key is to bulk buy with the free-shipping order amount in mind. Ordering one bottle at a time tends to get expensive because of shipping, so the standard approach is to restock fast-running staples (protein, vitamin C, zinc, etc.) together. On the other hand, huge orders above the duty threshold may be stopped or taxed at customs, so the sweet spot is an order that clears the free-shipping line while staying mindful of the tax line. See iHerb sales and bulk buying for details.

SHEIN — Avoid sizing disasters with actual measurements and review photos

SHEIN's biggest appeal is building up a trendy wardrobe cheaply, but the flip side, and the biggest hurdle, is inconsistent sizing and quality. Most failures are "not the size I expected" or "the fabric doesn't look like the photo." The fix is simple: ignore S/M/L and compare each item's actual measurements (bust, length, shoulder width) with clothes you already own. Then check buyers' review photos for the real color and how the fabric hangs. That alone greatly reduces "it arrived, but I can't wear it." Price-drop timing and smart buying tips are in How to shop SHEIN without regrets.

Temu — Make use of low prices and easy returns, but allow for delivery time

Temu sells household goods, knick-knacks and small kitchen items at amazingly low prices. Its return and refund system is well developed, so you can try things knowing a dud won't hurt much. However, delivery often takes a while, so it's not for anything urgent. The right way to use Temu is for "consumables I'll use eventually, bought together" and "cheap things to try where failure doesn't matter." More in Smart ways to use Temu.

AliExpress — Choose shipping (like "Choice") and choose sellers by rating

AliExpress has everything from gadgets, PC parts and tools to DIY materials and niche goods. Two things make the difference here. First, the shipping method. You can often pick shipping with different costs and delivery times, such as "Choice," and if you're not in a hurry, the cheaper option lowers your total. Second, seller ratings. The same product can come from sellers with very different trustworthiness, so always pick based on ratings, sales history and reviews. How to choose shipping is covered in Using AliExpress Choice.

Amazon US and eBay — Hunting for one-off items you can't get in Japan

For model numbers not available in Japan, overseas-exclusive versions, discontinued items or collectibles, turn to buying directly from Amazon US and eBay. With Amazon US, the first step is checking whether each item ships to Japan. eBay is mostly individual sellers, so assess the seller's rating and the listing format (Buy It Now or auction). If buying yourself is tricky on either site, you can also use a proxy buying service.

Pitfall 1: You can only compare once you add shipping and duties to get the total

The most common regret with overseas shopping isn't quality or size, it's "the total ended up higher than I expected." Even if the listed price looks cheaper than in Japan, international shipping tends to be pricey, and above a certain amount, customs duty and consumption tax are added. What you finally pay is item price + shipping + duty and consumption tax. Only with this total can you tell whether it beats buying in Japan.

Taxes are especially easy to overlook. For personal imports, as a rule, goods above a certain value are subject to customs duty and consumption tax, and rates and treatment vary by item. The thresholds and calculation methods (such as treating only part of the purchase price as the taxable value for personal imports) are set by law and can change. Always check exact figures and item-specific rules with official sources such as Japan Customs.

Pitfall 2: Shipping costs vary a lot by shipping method

Overseas shipping isn't a flat rate like many Japanese stores. Faster costs more, slower costs less, and the same item can swing by several hundred to several thousand yen depending on the method. Shipping may also be calculated by "volumetric weight," based on box size rather than actual weight, so light but bulky items cost more than you'd think. Saving on shipping boils down to three ideas.

• Choose cheaper shipping if you're not in a hurry — If you don't need it "within X days," economy or standard shipping lowers the total. This works especially well on sites like AliExpress where you can pick options such as Choice.
• Combine into one order — Shipping adds up per order, so putting multiple items in one order is more efficient. Restocking fast-running consumables together is the classic approach.
• Make full use of free-shipping thresholds — On sites like iHerb that offer free shipping above a certain amount, the standard move is to fill up to the threshold with things you'll definitely use.

Bulky lightweight items (clothes, bedding, large plastic goods, etc.) can see shipping jump due to volumetric weight, so check the total carefully first. Shipping methods, volumetric weight and site-by-site savings tips are covered in How to save on overseas shipping.

Pitfall 3: Avoiding fakes, wrong sizes and parcels that never arrive

Overseas shopping brings types of trouble that rarely happen in Japan. Getting a counterfeit, receiving clothes in overseas sizes that don't fit, or the item never arriving at all are the big three. Low prices make it tempting to skip checks, so it's worth the extra effort here.

• Be suspicious of "too cheap" brand goods — It's safest to assume brand-name items with extreme discounts carry a high risk of being fake. If you can buy from an authorized retailer or official channel, that's more reliable. Counterfeit brand goods can't be brought into Japan and may be stopped at customs.
• Check seller ratings and reviews — On marketplace sites like AliExpress and eBay, ratings, sales history and review photos are your best clues to trustworthiness.
• Check sizes by actual measurements — Overseas sizes don't match Japanese sizing. Comparing actual measurements (cm) with your own clothes, rather than S/M/L, is the quickest way to avoid sizing mistakes.
• Check the return/refund policy before ordering — Knowing in advance what happens if an item doesn't arrive or the wrong one comes (whether returns are possible, refund conditions, deadlines) lets you act when needed. Sites with easy returns like Temu carry less risk here.

The common rule: if something feels too cheap or too good to be true, stop and think. A few minutes checking reviews, ratings and return conditions can head off trouble before it starts.

Payment and delivery — things to watch with overseas shopping

With overseas shopping, how you pay and how you receive matter as much as what you buy.

Customs taxes in particular may be billed by the courier when the item arrives. So you don't panic thinking "I already paid, why do they want more money?", factor in possible duty and consumption tax from the start.

Overseas shopping doesn't end at checkout — costs from reorders and warranties

What people overlook most with overseas shopping is the hassle of repeat orders and what happens after delivery, rather than the first order. Something that's a simple "it's defective, return it" with a Japanese store becomes a different story when the return address is overseas. Thinking about this upfront makes it clearer what to buy and what not to.

For consumables and repeat purchases, bulk buying changes the math

For products you buy repeatedly, like iHerb supplements, protein and body care, buying one at a time means paying shipping every time. Since many overseas sites reduce shipping above a certain amount, the practical rule for repeat items becomes "stock up before you run out." But bulk buying is limited by best-before and expiry dates. Supplements sometimes arrive with little time left, so check the expiry date on each bottle when they arrive and work backward to plan your next order, so nothing goes to waste.

Personal imports also have quantity limits. Medicines, quasi-drugs and cosmetics must be for personal use, with quantity guidelines for each product type. Even supplements will be stopped at customs if the amount looks like it could be for resale. Before thinking "I'll buy loads to cut shipping," check the personal import quantity guidelines from Japan Customs and the Ministry of Health, Labour and Welfare.

Returns and exchanges depend on whether you can send things back

With low-priced clothes and goods from sites like SHEIN and Temu, wrong sizes and hit-or-miss quality happen a certain percentage of the time. If the site has a return center in Japan, the process is fairly easy, but if you have to send items back overseas, return shipping can easily cost more than the item. In practice, it helps to sort things like this:

• Low-priced clothes and goods: First check whether you can negotiate a "refund only" with photos, without sending the item back
• Pricier electronics and brand goods: Before buying, find out whether you can get warranty service from the official Japanese distributor
• Supplements and food: Assume opened items generally can't be returned, and try the smallest size first

Manufacturer warranties may not work in Japan

Electronics bought from Amazon overseas or overseas sellers may have warranties that only apply in the country of purchase. Some brands clearly state a worldwide warranty, but if not, expect that a Japanese repair center might turn you away if it breaks. If you think of the total as "cheap to buy, but repairs at my own cost," the gap with the official Japanese version shrinks, especially for pricier devices.

Official Japanese products, parallel imports, overseas shopping — three ways to buy the same item

When considering an overseas purchase, you're not just comparing against other overseas sites. The same product is often available through three routes: official sale in Japan, parallel imports sold in Japan, and personally importing it yourself from overseas. Beyond price, each comes with different responsibilities.

When personal importing tends to come out ahead

The real difference shows up with products that have no Japanese distributor, or are very rarely sold in Japan. Many supplements bought on iHerb differ from Japanese products in ingredients and dosage, so there's simply no equivalent in Japan. The same goes for outdoor gear made to overseas standards, replacement parts for certain brands, and colors or sizes not sold in Japan. In these cases there's nothing to compare against, so it's either import it or go without.

On the other hand, importing appliances or brand goods that are readily sold in Japan narrows the gap once you add shipping, duties and the lack of a warranty. Electronics in particular involve voltage and giteki (技適) certification issues (covered in the next section), making the official Japanese version the more sensible choice.

For cheap clothes and goods, compare with the same category in Japan

Clothes and household goods on SHEIN and Temu compete with Japan's budget brands and discount stores. The deciding factors here aren't just price but whether you can try it on, use it right away, and send it back if it's a miss. A realistic split: buy things you need urgently and reliably, things that touch your skin where irritation is a concern, and items where size is critical like underwear and shoes in Japan after seeing them in person; send fun accessories in colors and patterns, seasonal items you'll use up, and things you won't mind if they flop to overseas shopping.

A middle option: using a proxy service

If eBay listings or overseas brand sites don't ship to Japan, you can use a proxy buying or package forwarding service. Fees and domestic shipping are added, but because they receive items at a local address and can consolidate shipments from multiple stores, the total can come down when you buy from several shops at once. However, with a middleman involved, it gets complicated to know who's responsible if something goes wrong. It's safer to consider this once you're used to buying from overseas, rather than for your very first order.

Voltage, plugs, giteki and size labels — avoid "it arrived but I can't use it"

The hardest mistake to undo with overseas shopping is when the item arrives and can't be used in Japan, or doesn't fit your body. Given return shipping costs, you usually end up giving up, so decide what to check before you hit the order button.

For electrical products: voltage, frequency and plug shape

Household power in Japan is 100V, at 50Hz in eastern Japan and 60Hz in western Japan. Products for overseas markets are either around 110–127V or 220–240V, and a 220V-only device won't work properly plugged into a Japanese outlet. Conversely, using a product designed for a region with higher voltage than Japan without a transformer can cause breakdowns or overheating. If an AC adapter says "INPUT 100-240V 50/60Hz," it's designed to work worldwide, but heat-generating items like hair dryers and irons, and kitchen appliances with motors, are often voltage-specific, so take extra care.

Plug shapes also differ by country. Some regions use the same Type A plug as Japan, but a plug adapter only changes the shape — it doesn't convert voltage. Mixing these up is dangerous.

For wireless devices, check for the giteki mark

To use Wi-Fi, Bluetooth or other radio-emitting devices in Japan, you need technical conformity certification (giteki, 技適) under the Radio Act. Overseas models sometimes lack it, and using a wireless device without the giteki mark in Japan can violate the Radio Act. This covers smartphones, smartwatches, wireless earbuds, drones, wireless keyboards and more. Check whether the product page says "Japan version" or "技適取得済み" (giteki certified); if not, you may need to decide not to buy.

Read clothing and shoe sizes in that country's sizing

With overseas clothing, including SHEIN, the same "M" can have different measurements depending on the brand or production batch. The only thing you can rely on is the size chart (actual measurements) on the product page. Following these steps makes mistakes less likely.

1. Measure clothes you own, laid flatTake a piece you wear often, measure the shoulder width, chest width, length and sleeve length with a tape measure, and note the numbers.
2. Compare with the product page's measurement chartCompare the numbers in cm, not S/M/L. If only inches are given, convert using 1 inch = 2.54 cm.
3. Factor in how much the fabric stretchesPolyester blends and knits stretch, so a smaller size may still fit, but woven 100% cotton doesn't stretch.
4. Look at body info in review photosIf several reviews list height, weight and size, they can be more reliable than the size chart.

Shoes are even harder. US, UK and EU sizes are mixed, and even the same EU size can mean a different foot length depending on the brand. The only reliable method is to find the brand's official foot length (cm) conversion chart and match it to your own measured foot length.

What you'll need besides the item itself, and common add-ons you can skip for now

Overseas shopping isn't done just because the item arrives. If you realize you're missing something after delivery, you end up buying it in Japan and your savings vanish. Here's what to have ready, and what you surprisingly don't need.

Things you'll almost certainly need

• A payment method with no or low foreign transaction fees: Many credit cards add a fee to foreign-currency payments. If you keep shopping overseas, having one card with good terms adds up over time.
• A way to receive parcels with your identity verified: Customs may ask for extra documents, or the courier may bill you for duties they paid on your behalf. You may not be able to receive the parcel if you rely on a delivery locker, so set up notifications in the courier's app.
• A tape measure (if buying clothes): As in the previous section, essential for comparing actual measurements.
• Plug adapter / transformer (if buying such devices): If you wait until the item arrives to buy these, you'll have a period where you can't use it. Check the voltage specs and order them at the same time if needed.
• Your address in romaji: Keep an accurate romanized version including block number, building name and room number, so you don't have to puzzle over it every time you order. Errors are a major cause of delivery delays.

Add-ons often pushed as a "set" that are low priority

Some things often suggested on the cart screen can be skipped on your first order.

Things to do on your first order that make life easier later

1. Collect order confirmation emails in a dedicated folderIf you're asked about the taxable value for customs, these prove what you paid. Keep them until the item arrives.
2. Note the tracking numberThe tracking site may change between the international and domestic legs. With the number, you can also look it up on the Japanese courier's side.
3. Take photos when openingIf the item is damaged, incomplete or wrong, photos of the packaging and contents become your evidence. Photographing the outer box before opening makes it even more solid.

Another option: duty-free shopping when traveling

Online shopping isn't the only way to get overseas goods cheaply. Buying at duty-free shops on a trip abroad can also work well for some items. But there's a separate rule from online shopping — the duty-free allowance for bringing goods into Japan — and ignoring it undermines the savings.

• Exceeding the allowance makes it taxable — If you go over the duty-free limit when returning to Japan, the excess may be taxed. Alcohol, tobacco and perfume have set limits on quantity or volume.
• Don't overbuy just because it's cheap — Even if it looks cheap tax-free, buying more than you can use or more than the allowance wipes out the savings through taxes or waste. Buy what you need, within the limits.
• Check the latest eligible items and rules — Allowances and eligible items can change, so check the latest information before you leave and before you come back.

How to pick items worth buying and the specifics of the allowance are in Making the most of duty-free shopping. Travel shopping and overseas online shopping are best used depending on the situation.

How to shop overseas without mistakes

Putting the key points into an ordering flow gives you the steps below. Instead of jumping at "it's cheap!", just follow this order and you'll avoid most overseas shopping pitfalls.

1. Decide what to buy and pick the right siteSupplements → iHerb, clothes → SHEIN, household goods → Temu, gadgets → AliExpress, one-off items → Amazon US / eBay.
2. Estimate the total including shipping and dutiesDon't judge by the listed price alone. Add shipping and possible taxes, then compare with buying in Japan.
3. Check authenticity, size and returnsCheck seller ratings, review photos, actual measurements, and return/refund conditions.
4. Choose a shipping method to optimize shipping costsCheaper shipping if you're not in a hurry. Use bulk buying and free-shipping thresholds too.
5. Check import rules, then order and receiveMake sure the item isn't restricted and anticipate whether taxes will apply at customs before ordering.

Timing your restocking around big sales and point-boost periods lowers your real cost even when shopping overseas. For timing, see the sale calendar; for stacking rewards, see point rewards. Think about it together with saving on household goods and Japan's money-saving furusato nozei (hometown tax donation) program to optimize your shopping overall.

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