Had same urge with Cello once. Got it from eBay direct from
   China for $50. [this was 2001 O_O ] Taught myself how to play
   [looking at videos and stuff], figured out a few songs, had some
   fun with it. Then when Christmastime rolled around, I sold it
   locally for $100 or best offer. I kept it in good shape, learned
   from it, and considering that it was impossible to get a Cello
   locally for anything CLOSE to $100, I didn't feel bad about a
   profit. I treated it as if I was running a very temporary import
   business tongue emoticon The Cello went to a dad who was buying
   it for his daughter and he told me later she was thrilled with
   it. Felt good. I say: Do it smile emoticon