Michaela Baker spent years on the dealer side of the desk, building the software that runs every sale from first click to signed contract. She watched buyers walk in with printed research, phone screenshots, and a number they thought was final. She watched that number change in the finance office, every single time.

"Do your research and you won't get ripped off." You have heard it. You have probably said it. The advice is wrong at the level of architecture, not intent. The system is not built to reward a prepared buyer. It is built to move the price after the buyer has already committed.

The research on this is worth reading. CoPilot, an AI car shopping app co-founded by Baker after she left the dealer side, studied close to 500 used car deals completed between late 2025 and early 2026. The findings: 59% of those deals included fees added on top of the advertised price. The average overcharge was $1,055. One in four buyers paid more than $1,500 above the listed number. One in eight paid more than $2,500.

These were not careless buyers. They did what the advice says to do. They looked up the price. They compared listings. They walked in with a number.

The number moved anyway.

"Do your research" does not fail people. It fails the system they are trying to beat.

Baker named the business motive in plain terms. After COVID, dealers got used to record profits. When margins shrank, they were not willing to give those profits back. Bait-and-switch pricing became the tool to keep the numbers up.

The problem is not that buyers lack data. The problem is that "research" replaces the one thing that actually protects you: a locked price before you set foot on the lot.

Here is how the architecture works. The advertised price gets you through the door. Then hours pass. You test drive. You fill out credit forms. You sit in a chair while someone runs your numbers. By the time the finance office adds a $599 "documentation fee," you have spent three or four hours in a building designed to make leaving feel harder than paying.

Behavioral researchers call this escalation of commitment. Pricing researchers call it drip pricing. Dealers call it Tuesday.

The fees arrive in sequence, after the buyer's investment of time and identity is already too high for most people to walk away. That is the structural flaw. Research cannot fix it because the system does not introduce the real cost until the research is done and the buyer is sitting down.

Stop trying to out-research a system designed to defeat research. The principle is simpler and less comfortable: never enter the commitment trap without a written out-the-door number.

Once that is clear, three moves follow from it.

Email or text the dealer. Ask for the full out-the-door price, including every fee, excluding only state tax and registration. If they will not put it in writing, that is your answer. Most people skip this step because it feels rude or premature. That discomfort is the entire mechanism working as designed.

A dealer charging $599 per sale in documentation fees has roughly $30 to $50 in real cost behind that line item. On 100 sales a month, that single fee produces about $55,900 in monthly profit. It is not a cost. It is a margin line disguised as paperwork. When you see it on the contract, you are looking at the most profitable square inch in the building.

When a fee appears that was not in the written OTD number, say it plainly: "This was not in the number you gave me. Remove it or I am leaving." The 73% annual turnover rate among non-luxury dealership sales staff, confirmed by NADA workforce data, means the person across from you has likely been there less than a year. The script works because no one trained them to handle a buyer who names the pattern.

Running this for one purchase cycle does something the advice never did:

You see which dealers respond to the OTD request and which ones stall. You see the gap between the advertised price and the real price before you drive to the lot. You see how many fees vanish the moment you ask for them in writing. And you see how much time you were spending inside a system built to use your time against you.

After the purchase, ask three things.

→ What moved the final number away from the advertised price?

→ What looked like progress (test drives, friendly conversation, "let me check with my manager") but left no trace on the contract?

→ What friction showed up more than once across different lots?

That is the difference between advice that sounds right and a system that proves itself.

The FTC sent warning letters to 97 dealership groups earlier this year. NADA said the overwhelming majority of dealers are compliant. The transaction data say 59% of deals. That is not fringe. That is the default setting.

Baker used to sit behind that desk. She built the software. She watched the numbers move. Now she publishes the data that prove it.

The advertised price was never the price. It was the opening move in a system built to make you pay more than you planned. Not because you were careless. Because the architecture was designed that way.