Your plan relies entirely on the fact that they will assume it is the guy who they just say Paying stealing, rather than the suspicious looking guy with a kiddie pool in his cart running out the door. Don't they have a lot of security cameras that will see you and your FACE?
I know people who steal "VIdeO GamEz!1" from Walmart, it seems like a pretty stupid idea. They were selling them too, that makes it even riskier.
Torrent Movies, Music, and PC games, Buy the rest with the money you save.