While the deal would be unlikely to have any major direct impact on the secondary Pokmon market, it would still make the game less accessible and more expensive for wide swathes of players.
Based on the latest market prices tracked on TCG Stacked, Shaymin is worth about $0.05 USD
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Still, it has been quite a generous year from the Pokemon company with us getting the Trainer Gallery cards and Radiant Pokemon, making even the dreaded white code card pack potentially good, more alternative arts and VSTAR cards super powerful V-volutions that possess one time only game changing abilities or attacks
Heliod, Sun-Crowned goes infinite with any number of cards across formats: And that isnt counting the large number of 3-card combos
The consistency with which sacrifice gets built into these set mechanics means theres new, pushed support cards being printed for the archetype all the time