I have, they said No.... She did tell me to fill out a survey on the receipt and get a coupon for 10 bucks off. I signed up for radio shack e-mail and they sent me a coupon for 10 bucks off.
Sprint buyback states "up to" $150. I assume after they receive it, they will appraise it. I'll be sending mine off in a few days, has a few minor scratches. Hopefully I get the full amount.
You can get 20% off accessories if you download the foursquare app. It's available on blackberry,ios, and android. I asked about it and the employee applied the 20% off of my otterbox defender.
I went to sprint store instead and got the 150 and paid only 60 dollars for the phone. Still have a $50 gift card to the shack. Gonna get 16 gb card and something else.