shiny treasure booster box Pokemon sv4a Korean each booster pack contains 10 cards. Pokemon Shiny Treasure EX Booster
Description
The limit on the number of packs you can open every day is an effective brake on the dopamine-mining randomised-reward aspect of the game

That's 1 in 2,520 if you want one of them in particular, and that makes them undoubtedly and extremely rare

I will say that some individual sellers ship better than TCGplayer themselves

They only existed in the TCG, and were discontinued after Ancient Sanctuary

Luckily, while several of the best cards from the Legendary Collection don't have a separate market price for the reverse holo version, this Gyarados does have one at $141.38 for NM copies

Cards with limited production, short print ads, or unique distribution methods tend to perform the best over time