Entrepreneur Owen Monahan has been collecting vintage items since he was a teenager as secondhand shopping becomes the new norm for many.

We open Konami's $200 Pot Collection box and it’s packed with rare promo cards—don’t miss this one! #YuGiOhPotCollection #PromoCards #BoxOpening ...

A player can look good on the front of his card, but it’s what’s on the back that matters. That’s where the player’s stats ...