After all, when your employer pays you terribly, why do you care? Reject the idea, customer complains to your manager. Who is also, may not be the brightest star in the constellation, who may discipline/fire you.
Also? Average wage at WalMart: $8/hr (weekly: 8*8=64 * 5 days=$320). Which means, pulling this once and reselling the console is almost a week's pay. Taking $300 from WalMart, whose family owns more money than the bottom 42% of the US combined to feed your family doesn't seem like the most heartless crime in the world.