Win the bid. Never overpay.
The Nellis Ultimate Bid Checker tells you the real out-the-door cost of any auction lot — buyer’s premium and tax included — and grades whether it’s actually a deal before you bid.
Check a bid now → How it works🧮
True all-in cost
See your bid plus the 15% buyer’s premium and 8.375% sales tax instantly — the number you’ll actually pay at cash checkout.
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Smart bid targets
Get Great / Good / Max bid ceilings calculated backward from retail, so you know your walk-away price before the timer hits zero.
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Instant deal grade
Every bid is graded from GREAT DEAL to OVERPAYING against live retail pricing from Amazon and CamelCamelCamel.
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Track your checks
Save every lot you evaluate and review your wins. Works on any auction house — just adjust the premium and tax.
Stop guessing at the counter
It takes ten seconds. Paste the item, grab the retail price, set your bid.
Open the Bid Checker →