Canada Day 2/$30 = win.
I know this may seem like an ass move, but what if I technically returned my still sealed copy of Burnout Paradise and RSV2 on Canada Day, assuming there is a 2/30, get my $45.30 back, then re-buy those two games for $30. Would they have to honour it?
I could just say, yeah I changed my mind, I want the games back.