most of the good deals involve getting the car at invoice or less AND you keeping all rebates, look at kelly, edmunds nada, etc to find out the invoice price. Look at these same sights to get the wholesale price of your trade in. Agree to the price then, "i'll give you a deposit today if you add in an extra key, mats, or what you want. Remember NO dealer advertising, No front plate mount, Full tank of gas. Get everything they promise in writing.
2012 V6 with Weathertech Floor mats from a Boss 302.