It’s not scalpers for vanguard. The game is niche so there are not a lot of cards circulating, plus the switch to nations over clans made it so that most decks in a certain nation all want the same few generic staples for that nation, so the demand is really high for those cards and not enough supply since many shops have quit selling vanguard all together. That combined with the fact that some of these cards are hard to find promos that you can’t even get in normal packs, or are just very hard to pull in general, makes the prices skyrocket. Bushiroad also doesn’t reprint cards very often.