I just traded in Injustice, UMvC3, and Halo 4 and that was worth $33 toward Pokemon X for me, so I mean, maybe just a few games would be a better route than a console, they seem to hold more general value for some reason
GT DkP Godslayer. I slay gods, leader of Team Donkeypunch and ace pilot for Dragon Slayers in ACV Pokemon Black 2 FC: Rika [5201-1400-2612]
Since they're now selling Wiis for $49.99 I doubt you'd even get $20 to be honest. That's what they offered me when it was $79.99 from them used. :/
I didn't realize refurbished Wiis were down to 50$ (according to Gamestop's website).
My bad, TC. If that 30% extra is universal, which it should be considering it's only good for the Pokemon X/Y promotion, you could probably still get enough if you traded in that and your PSP (depending on the model).