I'd look for a bike VERY carefully. theres an 04 ZX10 on ebay right now, that I'm sure is stolen, I know the seller, and he's full of __it. just to give a perfect example of the risks.
That said, you can find a great bike, depending on what you're looking to purchase, and how much you wish to spend or where it comes from, I MAY be able to try and help you out.