When I see this kind of thing happening and a scalper has what I want in their cart (more than two) I just grab what I want out of the scalper's cart and walk away and go to the check out. Never had one physical try anything but boy do they get vocal. It is not stealing until it has been run through the register and paid for; anything in a shopper's cart is not legally in their possession till it is paid for. I have done this maybe half a dozen times in the last 5 or so years. It is a moral grey area I agree but fair is fair.