Auction Bid Calculator
Never overpay at a card auction. See the true landed cost of any winning bid — including buyer's premiums, tax, shipping, and grading. Compare 8 auction houses side by side or reverse-calculate your max bid from a budget.
Your Bid
Varies by state. 0% in OR, MT, NH, DE, AK.
If you plan to flip — shows profit per house.
True Cost Breakdown
Enter a bid amount to see the true cost.
Common Scenarios
Buyer's Premium Reference
What is a Buyer's Premium?
A buyer's premium is an additional fee charged by auction houses on top of the winning bid (hammer price). If you win a card for $500 at an auction with a 20% buyer's premium, you actually pay $600 before tax and shipping. This is pure profit for the auction house and is the #1 hidden cost that catches new bidders off guard. Always calculate your maximum bid AFTER accounting for the premium.
Auction Bidding Tips
Set Your Max Before the Auction
Use the Max Bid Finder to calculate your absolute ceiling. Write it down. Don't go over it — auction fever is real and costs collectors thousands every year.
Factor in ALL Costs
Buyer's premium, sales tax, shipping, and potential grading fees can add 25-35% to your winning bid. A $500 hammer price easily becomes $650+ total.
Compare Across Platforms
The same card often appears on multiple platforms simultaneously. Heritage charges 20% premium vs 0% on eBay — check both before bidding.
Bid Odd Numbers
Instead of $500, bid $510 or $525. Most bidders use round numbers, so odd bids often win by a small margin. This works especially well on eBay.
Watch the Final Minutes
Most auction action happens in the last 2 minutes. Set a maximum and let the sniping tools do the work — avoid emotional bidding during live auctions.
Check Sold Comps First
Before bidding, search eBay sold listings and 130point.com for recent sales of the same card. Never bid more than the last 3 comparable sales.