Aprilia RS125
Aprilia RS125 black
Aprilia RS125 rearThe best price for a used motorcycle is $0. Yea, it's when you get it for free. You'll be surprised, but I know this guy who's got a talent in getting used motorcycles for free. Well, yea, he's talking about motorbikes all the time, whoever he's with at the time, and where ever he is at. He got 1976 Honda CB750 from a friend of his good friend which only needed a minor fix (not the friend, of course). Another bike he got from his aunt's third husband or something, I think it was 1973 or 1975 CT 70. Smoke is coming out of it when you start, but my friend still rides it sometimes (the smoke goes away after a minute or two). Recently he told me he pulled next to a guy pulling an old motorbike behind him and started talking. He ended up with the bike, for free. I don't know how he does it or what he says.
Seriously, you need to take your time and investigate the current prices for the brand, year and model of the motorcycle you're about to buy. You can check the blue book value of the motorcycle at many web sites such as Kelly Blue Book or Nada. I personally like to use eBay to research the prices for the used motorbikes. You have to register with eBay (doesn't cost anything), then you'll be able to view completed sales for all motorcycles and other things. eBay often has good deals, but you have to look for them.
If you ended up buying a new motorcycle from a dealer, most of the time you should be able to buy your cycle for less than the advertised price. Take a look at sites like CycleBuy.com to learn the invoice price - what the dealer pays the manufacturer. Most dealers will be happy if they can sell you a bike and make a 10% profit.