Dealer auction fees explained

The hammer price is the part everybody watches and the smallest source of surprise. What separates a profitable bid from a loss is usually the stack of costs between the hammer and the car arriving on your lot, because they are predictable, unglamorous and easy to leave out.

The stack, in the order it lands

• Buyer premium. The largest, and usually a sliding scale that rises with the sale price. Two cars bought a few thousand apart can sit in different bands, which is why a flat allowance per car quietly misprices the expensive end of your buying.
• Gate or administrative fee. Smaller, usually flat, and charged per vehicle whatever it sold for. On cheap cars it is a larger share than anyone expects.
• Title and registration handling. Modest per car and worth knowing because delays here are what keep a car off your lot after you have paid for it.
• Transport. Varies with distance and with how full the carrier is. A car bought three states away at a good price is a car with a transport bill attached.
• Post-sale inspection or arbitration. Optional and often worth it, but it is a cost and it has a deadline.

Floorplan is a fee that nobody invoices

The auction does not charge it, so it does not appear on any statement from the sale, and it accrues every day from the moment the car is yours. A car that sits sixty days instead of thirty has an extra month of interest against it that never appeared in the bid.

That is why days on lot belongs in the bid arithmetic rather than in a separate conversation about inventory. A car you expect to move slowly is a car you should buy for less, and the difference is calculable rather than intuitive.

Why a flat allowance goes wrong

Most buyers carry a rough per-car number in their head. It works until it does not, and it fails in one predictable direction: the buyer premium is a percentage on a sliding scale, so a flat allowance under-counts on expensive cars and over-counts on cheap ones.

The result is a buying pattern that quietly favours the wrong end of your inventory. You pass on cheap cars that were fine and win expensive ones that were not.

Getting your own number

Take your last twenty purchases. Add the buyer premium, gate, title, transport, and the floorplan for the days each car actually sat. Divide by twenty. That number describes how your dealership buys, which no published schedule can.

Then build the maximum bid backwards from realistic retail: subtract reconditioning at your own rates, this fee number, and the gross the deal has to make. What is left is your ceiling, and it is a ceiling rather than a target.

One habit

Write the maximum down before the lane runs. Bidding is fast, competitive, and public, and your judgement inside it is worse than your judgement outside it. The arithmetic above is only worth doing if its answer survives contact with the auction.