Not 100% sure as my memory is pretty bad, but I recall trying this awhile back with the B2G1 sale (not coupon) and the saleswoman was nice enough to try it in every possible way, but it the system wouldn't validate both in the same sale. I had the 10 dollar off one though and contrary to her...
I was extremely tempted to pick this up, but everyone's extreme hate for it, made me think even the guitar wasn't even worth it. Seems like picking up a squier guitar for rock band 3 would be a lot better in the end.
@IAmTheCheapestGamer I remember that on the news awhile back, if not that one...