What to do with old TP2?

[nonstop]

Finally made the jump to Android with the release of the Epic 4G Touch and said goodbye to my $30/month SERO plan.

I've got this old beat up TP2 that's almost 2 years old, what's the best way to get rid of it? Will Sprint buy it back? One of those online places that buy your cellphone for a predetermined amount?

I don't think I'd want to sell it to anyone, it's pretty scuffed up and the 'Q' button doesn't work well. Otherwise it functions fine.