Can i trade in my Sidekick 2008 for a G1 Google Phone?

can i trade it in a tmobile store,how much will i have to pay after the trade in?|||T-Mobile does not trade in phones. My advice is to sell it on your own then buy the G1.|||Call or Email T-mobile. You probably won't be able to just "Trade" it in. Also try putting this in the "Cell Phones And Plans" section of Google Answers.