They're unlikely to ever reach the price of China's exclusive 151 Mew, however
$1.29 Demonlord Belzenlok Commander Masters $1.29 Demon of Loathing (Theme Booster) Theros Beyond Death $4.99 Liliana's Contract Core Set 2019 $1.29 Ardyn, the Usurper Final Fantasy $6.49 Sower of Discord Commander Masters $0.59 Abyssal Harvester Foundations $1.29 Dream Devourer Kaldheim $1.79 Rune-Scarred Demon Foundations $1.29 Venomcrawler Universes Beyond: Warhammer 40,000 $0.99 Archfiend of Depravity Final Fantasy Commander Decks $6.99 Rakdos, Patron of Chaos Murders at Karlov Manor $1.79 Bloodgift Demon Innistrad 0 results found
The deck also runs Ancient Booster Energy Capsule and Emergency Jelly as powerful Tool cards which can give Roaring Moon ex a bit more survivability
history a part of your Dueling space!
Elspeth, Storm Slayers Halo Foil variant is going for a whopping $400 right now, but thats actually slightly below market value
English boxes have no such guarantee, though overall statistical pull rates across many boxes are similar
