I use a Kodak Easyshare p850. I own a pawn shop for a living, so I get them kinda cheap. I recommend shopping at one in your town. Here are a few hints:
see what they have and go home and research what the item cost new.
Make sure all parts are there, charger is most important. Probably wont have a memory card or the small one that comes from the factory.
what to offer, If the camera is this years model, probably will only save 20-80 dollars. A year or two old, probably can get it at half price of new.
Kodak easyshare was 300 new, priced in the pawn shop at 180, probably would sell for 150. Yes he is gonna make a hundred bucks, but he has a BBQ addiction to feed
If I can help anyone let me know. At the moment I dont have any cameras