Last night I called: $30 for a 120GB drive. $80 for a 360 with a controller and all accessories.
IMHO, they aren't going to offer much if any trade-in "deals" on top of that. There's no reason to. These boards alone show that there's plenty of people willing to trade their RRoD "potential"...
If anyone's actually seen an ad, please post. I've heard that many times, Kmart will run stuff like this. If it rings up normal and you have no ad, Full Price....