Need to buy a trumpet for my son.?

Hello, this will be my sons 4th year playing the trumpet. He's going into high school and joined the marching band. I need to buy him a trumpet. I found one on ebay, can you please tell me if I should buy it. a href="http://cgi.ebay.com/NEW-BAND-APRVD-BRASS…" rel="nofollow"http://cgi.ebay.com/NEW-BAND-APRVD-BRASS…/a