Machamp has been in the Pokmon Trading Card Game since the first base set and has gotten many different versions, but this is the first time a V form has been printed
You can swap out cards, add new favorites, and personalize your deck to fit your playstyle and strategy, as long as you follow the formats rules
So it's no surprise that they sit at the top of the list for most graded cards
However, Japan continues to sometimes release sets or bonus packs earlier, giving a first-to-market premium for Japanese cards
I remember awhile back someone trying to sell a grey stamped card for like twice as much as regular but I didnt know what the fuss was about
This also gives all of your artifact creatures in your graveyard encore equal to their mana cost, so you'll attack each foe with a copy of that dork with haste, and they get sacrificed and you exile the card so it's a one-trick pony