Dragon's Keep: playing or legit?

My oldest kid and I collect Pokemon cards (I just collect, he's wanting to learn to play), which are super hard to find these days, so I ask people I know to keep an eye out for me. My friend stopped at Dragon's Keep in Lehi earlier today and saw they had some booster bundles and mini tins. The mini tins were priced at $20 but the boosters weren't marked so he asked how much and they told him $100?? He thought they were just fucking with him at first but the guy doubled down and told him it was to discourage resellers. They had to be playing, right?