Used car sales lots mainly get cars from auctions or a car that they have taken in as a trade-in. Most of these cars are shitty, but on occasion you may find that lucky gem. You really get what you pay for if you get a certified used car from Acura, Honda, Toyota, etc. I'm in sales too, and a word of advise... salesmen watch for emotion and feed upon it as ammo to close you. Most people buy emotionally. don't ever get too excited because they look for it. Freakin' sharks are all these little used car lots are! and by the way, always bring someone who knows about cars and maintanence, they can fix up the cosmetics... but its whats inside that counts!