Back in the old days of Magic (like ten years ago), single card prices were based mostly on their age, availability, and playability
Low Equip cost: The lower your Equip cost, the easier it is to arm a creature and/or move your equipment to other creatures, perhaps even after combat
Theros Beyond Death(Magic: The Gathering)(),TCG Stacked Theros Beyond DeathMagic: The Gathering Theros Beyond Death 1 Shadowspear$75.48 2 Nyxbloom Ancient$63.76 3 Thassa's Oracle$51.05 4 Shadowspear$45.39 5 Uro, Titan of Nature's Wrath$45.26 6 Thassa, Deep-Dwelling$39.69 7 Thassa, Deep-Dwelling$32.19 8 Underworld Breach$28.37 9 Nyxbloom Ancient$28.31 10 Heliod, Sun-Crowned$27.44 Theros Beyond Death
The rest of the cards -- including other Pokmon -- should support this Pokmon in some fashion
How do I avoid counterfeit 151 cards? 151 fakes have improved in quality as demand drove counterfeit production up