This Meowth had the exact same artwork, but instead of it being inside the Japanese version of Pokmon TCG on GBC, it was found as a promotional card inside a CoroCoro magazine in 1999
Several factors influence Twilight Masquerade card values: card condition (mint cards worth 3-5x more), rarity (holographic and rare cards command higher prices), first edition status, PSA/BGS grading scores, and market demand for specific Pokemon
That is also the reason that the back stayed unchanged during the 8th Edition revision of the card frame
Maybe Pokemon Company was trying to unify the House Style more strictly around then, just like Magic the Gathering started doing around the early 10s
Whether you are opening booster packs, building a tournament deck, collecting Charizard cards, or organizing thousands of cards in a binder, understanding Pokmon card measurements is an important part of the hobby