I noticed you asked about the selling of returned products. Most businesses that I am aware of, if they have a generous return policy have to resell what is returned. Usually it's not returned because of defect (in which case the shop would return it to the manufacturer) but because the customer changed their mind... or sometimes because they intended to. I used to work at well known electronics retail store and we called their 30 day no questions asked return policy their 30 day rental program. Because customers would intentionally buy an item (sometimes even laptops) for the duration of their vacation, then return it just before the 30 days were up. It went right back up on the shelf, and if someone complained about it they were simply given a double warranty on it, but no other compensation...
btw - don't worry about your lds going under, unless you're in an area that only has 1 shop (which is doubtful if you're in Florida). Many (most?) businesses today are having to learn to compete with online shops, just as they had to learn to compete with large retailers 15-20 years ago. The smart ones diversify and find ways to compete, the others get mad at you when they can't adapt... just my .02
Aloha, Tim