Buying vehicles at Copart or IAAI can be very profitable — but only if you know exactly how much you can bid before the deal stops making sense. The most common mistake new auction dealers make is getting caught up in the moment and bidding past what the margin allows.
Your max bid is the ARV minus your target margin, the tow cost, and the estimated repair — then adjusted for the buyer's premium, so the total cost (not just the hammer price) still respects your margin.
When the auction is live and the clock is running, it's easy to lose track of one of these numbers and bid too much "because the car looks good." Having the math ready before you start bidding is what separates a profitable buy from one that eats your margin.
J5Drive includes a bid calculator where you just enter the ARV, your target margin, tow cost, and estimated repair — and it instantly tells you your max bid and whether the deal meets your margin, before you place a single offer. Try it free for 1 month.