How to Buy Retro Games from Japan: The Complete Guide for Overseas Collectors
You’ve found the game. It’s sitting on Mercari Japan for a tenth of the US price — we track gaps like that in our Japan–US price database — and then you hit the wall: the checkout wants a Japanese address, a Japanese phone number, and a payment method that works in Japan. The seller ships domestically, full stop.
This is the normal state of things. Japan’s big used-game marketplaces were built for people in Japan. Getting a game out of them from overseas is a solved problem, but it helps to understand the machinery before you spend money. This guide covers the two routes, what each marketplace is good for, how proxy services actually work, and — most importantly — how to work out the total cost before you commit.
Why you can’t just buy it yourself
Mercari Japan and Yahoo! Auctions Japan generally require a Japanese account, Japanese payment credentials, and a domestic delivery address. Sellers ship within Japan only. Even marketplaces that technically let you browse from abroad won’t complete the transaction, and most individual sellers won’t make an exception — for them, an overseas buyer is risk and hassle with no upside.
So overseas collectors use one of two routes:
- Proxy (buying) services. A company in Japan buys the item on your behalf, receives it at their warehouse, and forwards it to you. This unlocks the entire domestic market — every Mercari listing, every auction, every small shop.
- International-facing shops. A smaller set of Japanese retailers ship abroad themselves. Simpler, but the selection is a fraction of the domestic market, and the best-priced used stock usually isn’t there.
For retro games specifically, the proxy route is where the price gaps live, so that’s what this guide focuses on.
The marketplaces, compared
| Marketplace | What it is | Best for | Watch out for |
|---|---|---|---|
| Mercari Japan | Japan’s biggest flea-market app; millions of individual sellers | Volume and price. Common-to-mid-rare games, often the cheapest copy in Japan | Quality varies by seller; descriptions are brief; good copies sell fast |
| Yahoo! Auctions Japan | The long-running auction site | Rare and high-end items, CIB copies, things that never appear as fixed-price listings | Auctions end on Japanese time; bidding wars happen; condition in photos only |
| Suruga-ya | Specialist used-media retailer (games, anime, figures) | Graded stock with detailed condition notes; huge retro catalogue; reliable descriptions | Prices are retail, not flea-market — usually above Mercari for the same title |
| Book Off / Hard Off (online) | The online arm of Japan’s giant used-goods chains | Bargains. Chain-store pricing lags the collector market, so underpriced gems appear | Stock is whatever was traded in; condition varies; the best items vanish quickly |
| Rakuten / Amazon.co.jp | Mainstream e-commerce | New reissues, accessories, books, and marketplace sellers of used games | Used retro stock is thinner and often pricier than Mercari; many sellers are domestic-only |
A practical pattern: check Mercari first for price, Suruga-ya for a condition you can trust, and Yahoo! Auctions when the game simply isn’t listed anywhere else.
How a proxy service works, step by step
The details differ slightly between services — ZenMarket, Buyee and Neokyo are three widely used examples — but the flow is the same:
- Create an account (free) and, on some services, add funds or register a card.
- Paste the item URL into the service’s search/order box, or use its built-in marketplace browsing. You pay the item price plus the service fee (the “first payment”).
- The proxy buys the item as a domestic Japanese buyer — or bids for you on auctions, up to your maximum.
- The seller ships the item to the proxy’s warehouse (domestic shipping, sometimes free, sometimes charged on top).
- You request packing/consolidation once everything you want has arrived. Storage is free for a limited window — 60 days at ZenMarket, 45 days at Neokyo, as of November 2026 — which is what makes bundling possible.
- You pay international shipping (the “second payment”), based on the packed weight and your chosen carrier.
- The parcel ships to you, and any import duties are handled per the carrier/service — either prepaid or collected on delivery.
The fees, in types. Expect some combination of: a service fee (per item or per order), domestic shipping inside Japan, a packing/consolidation fee on some services, and international shipping. Headline fees verified on the services’ official fee pages in November 2026: ZenMarket charges ¥300–800 per item depending on the shop (¥800 for Mercari and auctions, ¥500 standard, ¥300 at its recommended stores), with consolidation and basic insurance included and a funds-deposit fee from 1% [proxy service]. Buyee charges a flat ¥500 per order, with optional protection plans up to ¥500 [proxy service]. Neokyo charges ¥350 per purchase request plus a packing fee from ¥500 per shipment [proxy service]. Fees change — ZenMarket raised its Mercari/auction fee in spring 2026 — so check the fee schedule before a large order rather than trusting any guide, including this one.
A worked example: what a ¥1,680 game actually costs you
Numbers make this concrete. Take Mega Man X3 (Rockman X3), loose cartridge, from our price tracking (November 2026 snapshot): ¥1,680 in Japan versus a US price of $350.
Buying one copy through a proxy, roughly:
| Line | Amount |
|---|---|
| Item (Japan) | ¥1,680 |
| Proxy service fee (Mercari route, ZenMarket rate) | ¥800 |
| Domestic shipping (often included in Mercari prices; assume ¥0 here, can be a few hundred yen elsewhere) | ¥0 |
| International shipping, EMS to the US, 500 g — example rate, November 2026 | ¥3,900 |
| Total | ¥6,380 ≈ $43 |
Even if US customs charges duty on top — and since the US ended its $800 de minimis exemption on 29 August 2025, low-value parcels can now be taxed — you are nowhere near $350. The gap survives the fees with room to spare.
Now the flip side, because this is where beginners get burned. Run the same maths on a ¥800 game: ¥800 + ¥800 fee + ¥3,900 shipping = ¥5,500, about $37, for a cartridge that might sell for $10–15 at home. The shipping is a fixed floor under every parcel, and on a cheap single item it eats the entire price advantage. The per-item gap has to be large, or the parcel has to be shared. Which leads to the real skill in proxy buying:
Consolidation: the bundling strategy
International shipping is priced mostly by weight bands, and the first 500 g is the expensive part. Ten cartridges weigh barely more than one in a padded box — so ten games in one parcel might cost only slightly more to ship than a single game, while one game shipped alone carries the whole ¥3,900-class charge by itself.
Practical rules:
- Use the free storage window. Buy over two to six weeks, let everything accumulate at the warehouse, then ship once. This is what the storage period is for.
- Anchor the parcel with one big-gap item (like the X3 above), then fill the remaining weight with smaller-gap titles that would never justify shipping alone.
- Mind the step edges. Shipping jumps at weight thresholds; a parcel just under a band is much cheaper per game than one just over it.
- Don’t over-consolidate high-value parcels. A single lost or taxed shipment hurts more when everything you own is in it, and some countries tax by total parcel value.
Pitfalls checklist
Before you pay, run through these:
- Reproductions. Fake cartridges circulate widely for exactly the expensive titles — Hagane, Pokémon Emerald, Wild Guns and others in our database are heavily reproduced. Prefer listings with board (PCB) photos, check label print quality, and be suspicious of a “mint” copy far below market.
- Region and shape. A Super Famicom cartridge physically does not fit a US SNES without an adapter or modification (the shells differ), and the same applies in reverse. N64 and others have their own lockout quirks. Know what your hardware accepts.
- Save batteries. Most cartridge games of this era save to a battery that’s now 25–35 years old. Assume it needs replacing unless the listing says it’s been changed — a dead battery means your Pokémon save is gone.
- Japanese-only text. RPGs like Dragon Quest V and VI were never released in English on the Super Famicom. They’re cheap partly because the audience is small. Action games travel fine; text-heavy games are for collectors and Japanese readers.
- Condition keywords. Learn the three you need: 箱説付き (hakosetsu-tsuki) = box and manual included; ソフトのみ (sofuto nomi) = cartridge only; ジャンク (janku) = “junk” — sold as-is, untested or faulty, whatever the photos suggest. Also note that a Japanese seller’s “good condition” and a US grader’s are not the same scale; photos beat adjectives.
- Total-cost blindness. Item price is the beginning, not the bill. Always add service fee, domestic shipping, international shipping, and possible duty before comparing with the price at home.
FAQ
Is it legal to buy games this way? Yes. Proxy services are established Japanese companies buying domestically on your behalf; you’re importing used goods for personal use. Your country’s import rules and taxes still apply on arrival.
How long does the whole process take? Typically two to four weeks end to end: a few days for the proxy to buy and the seller to ship domestically, your chosen storage/bundling window, then international transit. Much of that time is the bundling wait — which is deliberate, and saves you money.
Which proxy should I use? It depends on where you buy. Per-order pricing (Buyee’s flat ¥500) suits multi-item orders from a single shop; per-item pricing with insurance included (ZenMarket) suits auction hunting; a low per-item fee (Neokyo) suits Mercari-heavy buying. Compare the total for your actual basket on each service’s fee page [proxy service] — the headline fee is rarely the deciding number.
Prices in this guide are dated snapshots (November 2026) from our Japan–US price tracking; fees were checked against each service’s official fee page at the same time. Both move. Verify before you buy.