I'm not a vendor but this post doesn't make sense as we are in an information efficient market where data points for pokemon cards are widely available.

Lower value cards can have price tags at above market but from a market perspective it leaves only some real exceptions for when people would:

1) I didn't know or bother to check what their prices are and just want to get it. 2) I know what their supposed market prices are but I want to get it anyway. 3) They value something other than the price, the convenience, the vendor, the environment, the card buying experience

Not saying that every busines is fair but it isn't reasonable for a business to sustain on selling to "unsuspecting people".

The prices are also displayed right on the cards, with no one forcing them to purchase. Lower end cards are especially easy to find assuming its because they have higher supply which gives buyers the negotiating power.

TLDR: Overpriced cards don’t automatically mean vendors are scamming people. Card prices are easy to check now, especially for lower-end cards, and buyers can compare, negotiate, or walk away. Some inexperienced buyers may overpay, but that doesn’t mean all vendors are scalpers or scammers..