The card in question, which had actually been mislabeled by Beckett, received just a 7.5 rating, though still sold for an impressive $34,100
For the same reason that phasing works similarly
Coins are earned from completing activities and will be spent on various cosmetics for avatars and decks, while crystals fund the purchase of booster packs and other playable cards
Cards with high PSA 10 populations (1000+) typically see smaller price multipliers because supply meets or exceeds demand
Life and loyalty are all transactional, and Winter is willing to make a deal with anyone (or anything) as long as it benefits him in the end
Technically, you could count dual lands that produce red and green as Gruul cards, but I leave them off to save space for other cards