Since a professional grade standardizes a card's condition, pricing becomes much more consistent
Either way, prices have shot up massively overnight, especially on the original printing from Legends
The rest of the deck supports our commander even further: we've got Sting, the Glinting Dagger to give her haste and get more activations per turn cycle, Kaya's Ghostform which protects her and is also sacrifice fodder, and Gixian Puppeteer which makes her activation even deadlier while also being able to return her to the battlefield from the graveyard
Studies of trophy and achievement stats over the years have found that only between 15-35% of players (pdf) actually complete any given game
Cards can be balanced in an even more nuanced way which acknowledges that there are tiers even within the top 5% of cards in Magic
When I first saw Vikavolt RCL, I was amazed that they were allowing Twin Energy to count as 40 damage for Powerful Storm