That's an interesting point--if they have the right to film shoppers in their store [which they do, as long as it's not like in the bathroom or whatever], how long are they allowed to keep the video, and what can do they do with it? I'd think they can keep it quite some time [if not as long as they want], and since they're security videos, as long as they can tie the usage thereof into 'security' or 'loss prevention', they can probably do what they want with them.
Cornfedwb: thanks for the link. Intersting. Although [and of course IANAL], and obviously it would ultimately come down to who has the better lawyer, but I don't necessarily see this return thing as fraud.
If I go into WalMart, and say "I bought this product, I don't have a [Walmart] receipt, and would like to return it", and the product was bought and is being returned new, there's nothing inherently 'misrepresented' or 'deceived' there. And if WalMart gives me 40 bucks credit, and they sell the product for 40 bucks, they haven't lost anything [although to be really anal, you could say 'The profit margin on the returned product was 10%, and that on the product you bought was 20%, so they did lose' but that's getting picky.]