I should have known..

Buyer tries to aggressively haggle me down for quarters, and I decided just to sell to him because I was trying to get rid of things.

Fast forward a week to him receiving the item, and he immediately reported an issue. He says that the item is significantly not as described. Now, if that was the case I would have no problem refunding him, but his proof was pictures taken with a literal potato. I said he could return it if he was unhappy, and he just asked for a couple of dollars off "for the inconvenience". When I requested additional photos, same thing. Potatos, and also some dogs in the background. He ended up dropping the issue and giving me a 5 star rating.

tldr; felt weird about a transaction, should have saved myself the hassle of not selling to the buyer.