First edition copies in any real condition have been rising steadily to around $950 and graded 9 and 10 copies are increasingly commanding prices from $8,000 to $43,000
Thankfully for others, Contamination is relatively easily dealt with due to its alternative cost of sacrificing a creature or sacrificing itself at the beginning of your upkeep
2023/11/19 Introduction to HGSS Series, HeartGold & SoulSilver, Unleashed, Undaunted, Triumphant: Changed sheet size for Pokmon Prime in model from 10x11 to 10x10 to be more consistant with ultra rares from later sets 2024/02/11 Legendary Treasures: Changed model slightly with regard to Radiant Collection: all ultra rares have same pull rate now 2024/03/24 Introductory Post to XY Series, XY, Flashfire, Furious Fists, Phantom Forces: Changed sequence length from 216 to 360 packs, which affects various pull rates slightly
For experienced collectors, these are the holy grail tier of the Japanese Charizard market