A three mana 1/3 flyer isn't great, but there will be decks that can make it a 3/3 in this format
The difference in materials used is also one of the factors why Japanese Pokemon cards are much more affordable compared to the English ones
Here six from the US, UK, second US, Germany, France, and Italy: And here the very rare variant with Game Boy Color insert from Australia, which I was finally able to buy after searching for it for 2.5 years a few months back: The promos inside these sealed backs are all the same though for the WB promos
Here is a short overview for the only three super-premium collections
However, like any collectible market, the value of Pokmon cards is not immune to fluctuations
"Where Have All The Demons Gone Today"