Like most Pokmon cards, the value of Charizard-EX depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (XY Black Star Promos)
Unfortunately, the Trainer Gallery in Lost Origin is weaker in value than some of the other sets from this era and the art isn't quite as bright
Sets 1-4 (The First Chapter, Rise of the Floodborn, Into the Inklands, and Ursula's Return) already left Standard in the game's first rotation, back in September 2025
2024 Pokmon TCG Scarlet & Violet Surging Sparks #238 Pikachu ex SIR There are six examples of this card, each is a language variant comprised of English, French, German, Italian, Portuguese, and Spanish
One of the most expensive Nidoking cards can be found in the Aquapolis set
By the way, if you've never played Cosmic Encounter , I heartily suggest giving it a try