DY: Why do you say buying with the specific intent to return is probably not?
The seller’s intention is to give the buyer a feeling of security that they can return it hassle free should something not work out. It is not a rental policy, and buying it al menas ken is tantamount to gezel.
It’s also a violation of dina d’malchusa (legally it’s called return fraud) and most of all a chillul Hashem.