◆ SLEEPERBID
About this tool & the honest fine print — private beta
What this is
SleeperBid is an advisory research tool. It watches public online auctions in the region, gathers listings into one place, and points out lots that might be worth a closer look. Think of it as a well-read friend who scans the catalogs overnight — not a broker, appraiser, or bidding service.
SleeperBid never bids for you.
Every bid, every purchase, and every pickup happens on the auction house's own site, under their terms, by you. We place no bids, hold no funds, and take no cut of anything you buy or sell.
Estimates & their limits
Some values shown here are unverified estimates produced from listing photos and text. They can be wrong — sometimes very wrong. A "resale estimate" is a starting point for your own research, not a promise of what something will sell for.
Before you bid on anything, verify for yourself:
- Condition — photos hide cracks, repairs, missing parts, and fakes.
- Legality — some items are restricted where you live.
- Fees — buyer's premium, sales tax, and card surcharges add up fast.
- Pickup — removal windows are strict, and a cheap lot two hours away is not cheap.
Suggested maximum bids are math on top of those same estimates. They inherit every limitation above.
Restricted items
Auctions routinely include things that carry legal or safety obligations: firearms and ammunition, titled vehicles, alcohol, chemicals, medical items, and more. When we detect these we flag them and never auto-price them — but detection is imperfect. If you bid on a restricted item, the licenses, transfers, titles, and safe handling are entirely your responsibility. When in doubt, ask the auction house before bidding, not after winning.
Photos & links
Most lot photos load from the auction house's own website. We locally cache only sources whose recorded rights permit that customer use; other operational caches remain owner-only. Every lot links back to its original listing, and that page is authoritative: if anything here disagrees with it, the source is right.
Account & outcome data
An individual account stores a verified phone number or Google email, a provider account identifier, its watchlist, feedback, regional plan interest, and any flip outcomes the user chooses to enter. Phone and Google verification is processed by Google Firebase Authentication. Google may receive and store a phone number for spam and abuse prevention; standard SMS and data rates may apply. SleeperBid does not store the one-time text code or a Google password.
New phone and Google accounts begin on the Free tier. Pro outcome rows are private to that account in the product; the owner can access them for support, security, and aggregate product calibration.
Actual purchase and sale results are valuable because they measure estimator quality against real resale receipts. They are not used to place bids, and SleeperBid does not sell personal account or outcome data.
When a user follows a lot link to an auction website, SleeperBid records the source, destination host, lot, surface, and a ten-minute deduplication bucket so it can report aggregate bidder referrals to auctioneers. The referral ledger does not store raw IP addresses or client-supplied destination URLs.
Beta limitations
This is a private beta run by one person. Coverage has gaps, scrapers break when auction sites change, data can lag behind live bidding, and features may change or disappear without notice. Nothing here is financial, legal, or investment advice, and availability is not guaranteed. Use it as one input among several — never as the only reason to bid.
Feedback
Spotted a bad estimate, a broken page, or a lot we should never have shown? Please say so — the feedback box inside the app goes straight to the owner, and it genuinely shapes what gets fixed next. That's the deal of the beta: you get early access, we get your honest corrections.