YMMV because trade value fluctuates even over the course of the day. Monday last week it was $135 in the morning and $125 later that afternoon. You don't have to be a pro member to get it. Not a bad deal if you were going to dump your XBox anyway. I'd call the store before going to make sure though.
Also, that assumes your console works and you have the power brick/cable, A/V cable and wireless controller.
Amazon trade in is $196 right now
Best buy online says $65
"*Values include a 50% promotional bonus, and is subject to change at any time. Offer not good on cash trades. Trades must be in full working condition to receive full value. Defective items may be eligible for trade at a lesser value. Hardware must have all necessary components. Cannot be combined with any other offer. Trades subject to manager approval. See store for details. No dealers. Offer valid in the United States, Puerto Rico and Guam only. Void where prohibited. Offer may be modified or ended without notice. "
Current Trade In Values (add 50% to this with the bonus!):
**LINK DOESNT WORK, YOU HAVE TO COPY AND PASTE IT
As of tonight its at $165+50% for the Xbox 360!!