It is notable that she costs three ink and therefore is limited to using songs that cost three or less, but she just happens to be an Emerald (green) card, and thats a color with a handful of cheap, useful songs
87 2000 Gym Heroes - 1st Edition Rockets Scyther CGC Gem Mint 10 $899 NO NUMBER Japanese Topsun Charizard, Charmeleon, and Charmander Blue Back PSA EX 5 $3,000 1997 (Only One Pokmon) Original Series
This cute, pastel HYOGONOSUKE Kangaskan was released as an SWSH Black Star Promo for the pre-release of Darkness Ablaze
A: Lugia VMAX cards generally cost $10-100+ for regular variants, while Rainbow Rare and Secret Rare VMAX can be worth $50-1000+ in mint condition
Naturally, theres nothing to stop players from finding out the deck lists online and purchasing cards individually, but its a lot harder and more expensive to do