Samsung SGH-P207

hi i just got a SE z500a about 3 months ago and I hate it. Way too big for me. The phone is in perfect condition with a face plate problem (slides of real easily) which probably could be fixed by getting a new faceplate. Anyway, i was wondering if it is possible to get a trade in and how much would it pay out. Also if anyone wants it here i can arrange something. Just wondering.