my first one was in amazing shape, titled, running. got it for $800.
my current one had a tank with a bunch of holes in it, but complete, already stripped down with a 4-petal reed block and a VM20 carb on it, running, titled for $300.
i wouldnt buy a non-titled motorcycle at this point. there are ways around a non-titled moped, but every state requires a title on a motorcycle, so its not quite as easy. your best bet would be to buy that one, and then try to locate a titled frame on ebay or something for like $100 and just swap everything over. my uncle does that ALL THE TIME on motorcycles. works well for him.