Chart shows the price of Grass Energy at the end of each month going back as long as we have tracked the item.
I got 3 of the ex dragon exs, dragonite, muk and golem (still have them) but I only got Zard and Electrode from Firered Leafgreen
Sandslash is classified as a 1-Star Shiny card in the Crimson Blaze set
Gouki Twistcobra X EARTH Level 3 [ Warrior / Effect ] ATK 1600 DEF 0 (Quick Effect): You can Tribute 1 "Gouki" monster, then target 1 "Gouki" monster you control
vintage ETBs like Plasma Storm can triple in value
Still, I loved being able to attempt to counter a foes spell with Daze (one of the most valuable cards in Nemesis ) by returning a tapped Island to my hand, seeing them smugly pay the they left open, but then pitching that Island and another card to pay the alternate casting for Foil, then watching their face fall - all while being fully tapped out