I'm going to be getting a Thunderbolt tommorow, and am going to sell my Droid X. Is $200a fair price?
Probably not when VZW is selling a refurb for $99 (with 2 yr contract).
you don't compare to what it costs on contract. Someone buying a used phone usually is doing so because they are in the middle of a contract but want a different phone. $200 sounds fair to me, but like the person above me said, I would check what they're going for on ebay first.
Gazelle would pay you $166.00 (if your phone is in good condition and you have all the original packaging, etc.) so I'd say you are right in the ballpark. Just guessing you would get $50-$60 more on ebay but sometimes I use gazelle because it's hassle free.
Gazelle offer link: