Thankfully, there is a rather simple explanation for why Sliver Hive is so expensive: Commander Masters
Decks contain only 20 cards, energy generates automatically once per turn rather than through cards, you only need three points to win (with prize cards removed), benches allow for only three Pokmon, and card mechanics are simpler than modern Pokmon TCG norms
One of my biggest complaints about even attempting to play Magic in the legacy, vintage, or even modern is that typically, the player with the most money wins
7 Squirrel Squatters (Galaxy Foil) - $10.97 Squirrels have long had a special place in Magic's history
The real money is in the 1999 Base Set holos , especially the 1st Edition and Shadowless prints, while the gold Burger King cards and common cards most people have are worth very little