One way to find out. Before 'paying' for the item, just ask them if you can use the item until you're done with it, and bring it back for a cash refund. What do you suppose the answer would be based on store policy?
That's rich...lol. When they ask why you're returning the item, do you say "Because I'm done with it and you deserve to be cheated."? Because any other answer would make you, well, you know....
Maybe spend your 12 bones at the mom and pop shops and get your social justice points by not patronizing shops you detest?