Key cards to include: Deep Forest Hermit, Scute Swarm, Glistener Elf, Nut Collector, Toby, Beastie Befriender, and Champion of Lambholt
Bgs/cgc is still fine, with cgc being newer but growing in demand and absorption
These don't really cost you a card, since you need to play lands anyway, and then at some point the life gainwhich was nearly freemay be relevant
I didnt get why Square Enix would risk cannibalizing the sales of its own card game, which is already not as popular as Magic: The Gathering

Mythical Pokemon Collection Box [Mew] $635.17 Super-Premium Collection [Mew & Mewtwo] $4697.97 2022 World Championship Deck: Andre Chiasson (The Shape of Mew) $29.05 2023 World Championship Deck: Vance Kelley (Mew's Revenge) $35.34 Kanto Power Mini Tin [Mew] $38.63 V Forces Tin [Mew V] $63.00 Mew V Box Power Partnership Tin [Mewtwo & Mew GX] $835.37 Ancient Mew #1Promo $104.71 Ancient Mew (Japanese Exclusive Print) #1Promo $324.95 Mew #1Promo $482.71 Mew #10Holo Rare $198.37 Mew #111Secret Rare $335.54 Mew #4Rare $103.33 Mew #15Holo Rare $182.59 Mew #10Promo $367.10 Mew #29Holo Rare $13.29 Mew #53Holo Rare $30.08 Grubbin #18Common $0.19 Lapras #54Uncommon $0.20 Vulpix (29) #29Common $0.20 Appletun V #26Ultra Rare $0.97 Magcargo #35Uncommon $0.12 Chandelure V #39Ultra Rare $1.05 Growlithe #32Common $0.05 Dewpider #19Common $0.04 Cinderace VMAX #45Ultra Rare $2.37 Accelgor #14Rare $0.05

Well be sure to update this list with all the latest rare cards as and when new sets are released, but in the meantime, read how TCG Pocket is already giving Pokemon Go a run for its money.