Sealed blind box case auctions: full unopened cases, searched at once

A sealed, unopened blind box case, typically 6 or 12 boxes, guarantees the complete set of figures at close to the printed odds, including a shot at the secret chase figure, which is exactly why cases often resell for more than the individual boxes inside them would fetch opened. The challenge is that genuine sealed cases get listed across dozens of platforms with wildly inconsistent naming.

Why the right sealed case gets missed

Collectors chasing a specific series watch the specialist Pop Mart resale spaces closely, which is exactly why the underpriced sealed cases aren't there. A genuine unopened case turns up just as often in a general "toys, new and sealed" auction, listed by someone who doesn't know the odds or the resale value. Catching those first means checking more platforms than anyone reasonably can, every day.

One search across every platform

Auction Bid Assistant's free browser extension searches the-saleroom, EasyLive, Bidspotter, Invaluable, NumisBids, iCollector and LiveAuctionWorld simultaneously, alongside eBay. A search for "sealed case," a series name, or "blind box case" returns matching lots across all of them, with images, prices, and seller details shown, sorted by platform in tabs.

Real results for "sealed blind box case Pop Mart": genuine sealed case listings including a Labubu "Big into Energy" sealed case of 6 and a Molly x Powerpuff Girls sealed case of 3, found in one search.

It works by searching from inside your own browser, the same as opening and searching each site yourself, just done in seconds. Nothing is stored on our servers, permissions are minimal, and the extension never places a bid on your behalf.

Alerts: for a market that moves in minutes

Genuinely underpriced sealed cases can be gone within minutes of listing. Save a search (a series name, "sealed case," or "blind box case" generally) and get emailed the moment a new lot matches it, across all covered platforms including eBay, where the bulk of day-to-day resale happens.

Want to try before installing?

The same search box works on this website with no install at all for eBay, iCollector, LiveAuctionWorld and Featured Auction catalogues, a quick way to see matching lots before adding the rest of the platforms via the extension.

Built for how collectors actually work

Save any lot with one click from search results, export your shortlist as a printable PDF or CSV before a sale, and on the day itself the optional live bridge feeds the auctioneer's asking price into the free bid calculator, so your maximum (with buyer's premium and VAT included) is always in front of you.

Common questions