Just upgraded my wife's phone and my phone through T-mobile. Wanting to sell our old ones. They are both great phones, nothing wrong them, and only 7 months old.
Phone #1: Blackberry curve 8900
Looking to get $75 (going between $80-$100 on ebay)
Phone #2: Samsung gravity 3 (Citrus and white) with qwerty slide keypad
Looking to get $50 (going between $55 and $70 on ebay)