Buying instruments on Ebay is a very, very iffy proposition.
A few years ago I bought a bass trombone that was full of red rot. Horn looked fine from the outside, but was rotting away on the inside. I was able to send it back and get my money back, but even for a horn for just getting back in the saddle, there are other options which are a lot safer.
Like my cousin Vinny, for example. He owns a pawn shop on the south end of town.