It is amazing that this needs to be brought up time after time on boards as sophisticated as this. The first, foremost, cardinal, etc. rule in price negotiations at a car dealer is to keep all transactions separate. The phrase "we'll talk about step two (three, four, etc.) after we complete step one" is your best friend. Within fifteen minutes of arriving at a dealership the salesman knows way too much about the typical dope: what he wants, what he is trading, what his ideal payment is, his time frame, etc. Don't be that guy. This is called "qualifying" and is standard procedure ----- they are way better at selling than you are at buying so you need to eliminate as much of their advantage as possible.