Really this is just the market correcting itself, because Spider-Man CBBs were getting ridiculously pricey for a set far from launch
The English POP Series 5 Umbreon trades around $6,500 to $8,500 raw (a PSA 2 sold for $7,500 in June, which tells you how little the number on the slab matters when the card is real), with PSA 10s valued around $63,000 and PSA 8s realizing $23,000 at auction
Once per turn, if a monster(s) is Special Summoned from the hand or Extra Deck in Attack Position: You can take 1 "U.A." monster from your Deck with less ATK than the highest ATK among those Summoned monsters, and either add it to your hand or Special Summon it, then those Summoned monsters lose 1000 ATK
Casting this creature can also make Yorvo, Lord of Garenbrig stronger
Things get even more interesting, however, in Commander shells focused on attacking and dealing combat damage
Notably, 1st Edition Boxes have a value of approximately $8,000