Back in the days of brick-and-mortar shopping there used to be people who bought a large screen TV shortly before a big sports game and then returned it afterwards. A lot of stores revised their return policies because of this.
I remember hearing from someone that in some parts of florida, the retirees would come down for the winter and just before returning to go back north, flock to the store and return a bunch of stuff.
My father in law will buy certain things (like a wedge pillow) that are too bulky to fly with, when he arrives at his destination. And then return it on the way back to the airport
If the restocking fee is low enough, people would just consider it a rental fee. You'd need to make it close to 50% fee to discourage the massive returns
