I’ve used Poshmark once. It’s primarily a used/vintage clothing exchange. I had an old vintage Jeep baseball cap with an adjustable metal buckle (not the cheap plastic or velcro adjustments) and actual stitched (not silk-screened) letters. It was my favorite ball cap but was falling into tatters. It’s probably been decades since the last one was manufactured, but I found an almost like new, virtually unworn, exact replacement on Poshmark.
I thought you were going to say you sold your old tattered cap for $500.