The problem would be that not everyone keeps their contact info up to date (I’ve probably moved twice since I became a member), some of the people would no longer be members, if they mail out a bunch of checks, some of them won’t get cashed, etc. Doing that is going to eat into the refund, so there will be less to hand out.

And, personally, I didn’t care that much. Most of the stores who sold things at higher prices because of tariffs have no record of who bought bought what, but I still want to see them go after the government for the money. Reducing future prices seems simple.