Limited Print Runs & Exclusivity Special editions like Japanese promo cards, anniversary sets, or holiday releases (e.g., 25th Anniversary Collection) often have limited availability, increasing demand
While these are not legal in Standard, as indicated by an "EOS" in the corner instead of "EOE," they do add some visual flavor for those seeking some non-Standard additions in the bonus sheet
Whether or not a copy still sealed in the original trophy case would have fetched more remains to be seen, though, given the card's value, it's perhaps a little surprising that the seller opted to open it up
In fact, the way each one adapted the source material was quite different, leading to a very interesting situation, especially in regard to Yu-Gi-Oh
WANTED: Seeker of Sinful Spoils X SPELL Quick-Play Add 1 "Diabellstar" monster from your Deck or GY to your hand