Garib

A numismatics related item that is selling or sold at a price which is way above the amount the item usually sells

My grandfather was shipped Garibs at his house when he bought them from the infomercial in the middle of the night.

Boomer shit

Any product that claims as a collectable or investment, usually in infomercials, that elderly people buy.

The pawn owner was disappointed when the young man was selling his late grandparents boomer shit