thundurus pokemon card price EX [1LL] Thunder (130) This Pokemon also does 30 damage to itself. Thundurus #209 Prices | Pokemon

Exile the tokens at end of combat.) Polygoyfs power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1

However, you may find specific versions of cards that you cant find anywhere else

Ungraded, this card sells for roughly $186.00

Also I see you state, "All Unlimited, First Edition and Reverse Holo cards correspond with English sets." In French there only was a first edition shadowed and unlimited printing (but the 102 Pokmon line up is still the same), correct

Also note that I wont be looking at black board wipes specifically, as you can find rundowns of these elsewhere

If youre building a collection tracker, price alert system, store tool, or anything that needs to know what cards are worth and especially if you want to support multiple games beyond just Magic TCG API is the right choice