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Every page below watches Japan's four biggest marketplaces for one thing collectors chase — with live listing counts and one-click alert setup. Don't see yours? Any search works: create a custom alert.
Marketplaces
市場4 alertsMercari JapanMercari (メルカリ) is Japan's biggest flea-market app — millions of listings from Japanese sellers, most of which never ship internationally and sell within hours. Japan Alerts watches every new Mercari Japan listing and notifies you the moment your search matches, with a direct link to the listing — ready to paste into whichever proxy service you buy through. Pro's Deep Search even matches Mercari's own search engine — including item descriptions and bundle lots.View alertYahoo! Auctions JapanYahoo! Auctions (ヤフオク) is where Japan's rarest items surface — from ¥1-start auctions to dead-stock collections. Being early matters twice here: you get time to research, and time to arrange proxy bidding. Japan Alerts notifies you of new auctions the moment they're listed, not when they're about to end.View alertRakumaRakuma (ラクマ) is Rakuten's flea-market app — smaller than Mercari, which is exactly why it's less picked-over by overseas buyers and resellers. Japan Alerts monitors every new Rakuma listing alongside Mercari and Yahoo!, so a bargain there never slips past you.View alertYahoo! Flea Market (Yahoo! Furima)Yahoo! Flea Market (Yahoo!フリマ, often written Yahoo! Furima) — formerly PayPay Flea Market (PayPayフリマ) — is Japan's third-largest flea-market app, and the hardest of the four for overseas buyers to use: the app and site are Japanese-only, and Yahoo! JAPAN services aren't available in the EU, EEA or UK. Japan Alerts watches every new Yahoo! Flea Market listing alongside Mercari, Rakuma and Yahoo! Auctions — and Pro's Deep Search polls its native search too, descriptions included — so a listing reaches you seconds after it goes up.View alert
Archive fashion
古着8 alertsPorter Tanker bagsYoshida & Co.'s Porter Tanker line — the MA-1-inspired nylon icon — is dramatically cheaper on Japanese secondhand apps than anywhere abroad, and clean examples in the discontinued colors disappear fast. Sellers list under ポーター タンカー; we match both spellings automatically.View alertYohji YamamotoMainline Yohji Yamamoto pieces surface on Mercari Japan and Rakuma at prices that would empty a Grailed listing in minutes — archive runway included. Titles are usually written ヨウジヤマモト; an English-only search misses most of them.View alertIssey Miyake & Pleats PleasePleats Please, Homme Plissé and mainline Issey Miyake move through Japanese flea-market apps constantly — Japan is where the pleats come from, and where they resurface. Watch イッセイミヤケ and プリーツプリーズ without typing a word of Japanese.View alertComme des GarçonsFrom HOMME knits to archive runway pieces, CdG supply on Mercari Japan and Yahoo! Auctions is unmatched anywhere — sellers write コムデギャルソン or just ギャルソン, and the well-priced pieces are gone the same day they list.View alertUndercoverJun Takahashi's Undercover — Scab, But Beautiful, and every era since — appears on Japanese marketplaces long before it reaches Western resale sites, at a fraction of the price. アンダーカバー listings are exactly what our Japanese matching exists for.View alertvisvimFBTs, Virgils, and kimono-dyed runway pieces circulate on Mercari Japan and Yahoo! Auctions in sizes and prices the Western market never sees. Get pinged the moment ビズビム listings match your size.View alertKapitalKapital's boro, century denim and ring coats sell out at retail and resurface on Japanese flea-market apps at domestic prices — usually titled キャピタル. Alerts mean you see the Friday-night listing before the weekend resellers do.View alertNumber (N)ineMiyashita-era Number (N)ine is pure archive gold, and Japan is where it lives — most pieces list as ナンバーナイン on Yahoo! Auctions and Mercari. New grails surface weekly; the trick is hearing about them within minutes.View alert
Pokémon & TCG
トレカ5 alertsJapanese Pokémon cardsJapanese Pokémon cards — cleaner print quality, earlier releases, lower prices than English — flood Mercari Japan and Yahoo! Flea Market daily as collections break up. Sellers write ポケモンカード or ポケカ; we watch both, plus English titles, around the clock.View alertPSA-graded Pokémon cardsPSA-slabbed Japanese Pokémon cards trade on Mercari Japan and Yahoo! Auctions well under Western market prices — especially vintage and promos. An alert on psa + ポケモン catches every graded card the moment it lists, before it's cross-posted to eBay at a markup.View alertSealed Japanese Pokémon (未開封)Sealed Japanese booster boxes and packs — 未開封, 'unopened' — are the blue-chip end of the hobby, and Japanese sellers routinely list them below international market. The keyword that matters is 未開封, and it's built into this alert.View alertOne Piece Card GameThe One Piece Card Game's hottest leaders and alt-arts sell out instantly at Japanese retail and reappear on the flea-market apps minutes later — as ワンピースカード. Japan is the source market; alerts put you at the front of it.View alertYu-Gi-Oh! (Japanese)OCG cards, Asia promos and early-2000s holos list all day on Mercari Japan under 遊戯王 — a search most non-Japanese buyers literally can't type. Set the alert once and never miss a binder cleanout again.View alert
Anime figures
フィギュア6 alertsNendoroidsDiscontinued Nendoroids either cost a fortune on Western sites or ¥2,000 on Mercari Japan — there's rarely an in-between. Japanese sellers list under ねんどろいど; alerts catch the ones your collection is missing the minute they appear.View alertScale figuresSold-out 1/7 and 1/8 scale figures resurface constantly on Yahoo! Flea Market and Mercari as Japanese collectors rotate shelves — often boxed, often under retail. Watching the scale keywords catches what the general searches miss.View alertOne Piece figuresP.O.P., Ichiban Kuji last-one prizes, and event exclusives — One Piece figure grails list daily as ワンピース フィギュア on the Japanese apps, at prices the export market doubles. Get there first.View alertDragon Ball figuresFrom vintage Super Battle Collection to modern Ichiban Kuji, Dragon Ball figures move through Mercari Japan in volume — ドラゴンボール フィギュア is one of the busiest searches on the platform, and the good ones don't sit.View alertGunpla & Gundam kitsP-Bandai exclusives and retired MG/RG kits that resell for triple abroad list daily on the Japanese apps as ガンプラ — often unbuilt in shrink. An alert is how you catch the ones that never reach export shops.View alertHatsune Miku figuresRacing Miku, seasonal exclusives, and long-retired scales — 初音ミク figures are a collector economy of their own in Japan, and the domestic listings beat export prices by wide margins.View alert
Film cameras
カメラ6 alertsContax T2 & T3Japan is the world's best market for the Contax T2 and T3 — more bodies, more honest condition notes (ジャンク means junk, and we can filter it), better prices. New listings surface daily on ヤフオク and Mercari; the clean ones sell within hours.View alertPentax 67Bodies, the coveted 105mm f/2.4, and kits with wooden grips — the Pentax 67 system lists on Japanese marketplaces at prices that justify the shipping several times over. Watch ペンタックス 67 without knowing a word of Japanese.View alertOlympus mju (μ)The mju-II and its siblings hide under three different spellings on Japanese apps — μ, ミュー, and mju. Our alert matches all of them, which is exactly how you find the ¥8,000 one instead of the $300 eBay one.View alertRicoh GR seriesFilm GR1s and digital GRs alike surface on Mercari Japan daily — リコー GR — with the honest-condition, boxed examples going fast. Japan is Ricoh's home market; the supply difference is dramatic.View alertMamiya medium formatMamiya 7 rangefinders, RB/RZ systems and C-series TLRs — Japanese pro shops and estates feed a steady stream of マミヤ gear onto Yahoo! Auctions that Western dealers buy up and triple. Alerts are how you shop upstream of them.View alertFilm cameras (all)The broad net: every listing tagged フィルムカメラ across all four marketplaces. Pair it with a price cap and it becomes a dead-stock detector — Japanese households still surface untouched film gear every single day.View alert
Retro games
レトロ6 alertsFamicomBoxed Famicom games, Disk System rarities and console variants list daily as ファミコン — Japan's attics are still emptying. Complete-in-box copies at domestic prices are the whole reason collectors watch this market.View alertSuper Famicomスーファミ lots are where the deals hide: Japanese sellers bundle 20 carts for the price one boxed copy fetches abroad. Alerts on both the full name and the slang catch everything.View alertGame BoyFrom backlit-mod candidates to boxed Pocket and Light variants Japan got exclusively, ゲームボーイ listings run all day on Mercari Japan. The Light and special editions sell within hours of listing.View alertSega SaturnJapan is the only place the Saturn won — which means the library, the variants, and the prices all live on Japanese marketplaces. セガサターン listings include the shmups and exclusives that never left the country.View alertPC EngineThe PC Engine (TurboGrafx's Japanese self) has one of retro gaming's priciest libraries abroad — and one of the most active domestic secondhand markets. PCエンジン alerts catch HuCards and CD-ROM² games at Japanese prices.View alertRetro games (all)The catch-all: everything Japanese sellers tag レトロゲーム, across every console era and all four marketplaces. Best used with a price cap as a bulk-lot and estate-cleanout detector.View alert