Why I price against TCGPlayer
Every collector already checks TCGPlayer. It’s the open, live market: the number the whole hobby uses to know what a sealed box is actually worth today. So that’s the number I use too. Every box in the catalog is priced at its live TCGPlayer market, and the market reference sits right next to the price.
There’s no “our price vs. their price,” no guessing, and no number I invented. You see the market on TCGPlayer, and the market is what you pay. When it moves, the price moves with it, up or down, and prices refresh daily.