Yes, all three of the top decks play Harmonia in triplicate, and even decks on the cusp of meta are greedily staring at it, looking to see if they could dedicate a full third of their Extra Deck to a fairly-unsearchable handtrap
What is confusing at first is that, for a card game marked by dozens of booster pack releases focused on specific archetypes, there are initially only three booster pack types to buy: two specialty packs with modern staples and nostalgia picks respectively, and Master Packs which contain
The embossed gold pattern appears clean and undamaged
The article therefore treats price as a range and a decision signal, not as a single permanent number
But, failing that, Mega Charizard Y or Mega Blaziken running Fire-type attacks, or Mega Aggron with double Rock-type attacks is the way to go