The card owned by Singaporean card collector, Chew Zhan Lun, 33 is considered one of the "holy grails" in the Pokemon card-collecting world due to its rarity
A "Ditto" card distributed for free through a domestic promotion last year has also seen its value climb steadily and now trades for more than 600,000 won
The special illustration Miraidon ex and Spidops ex in one pack was particularly nice
However, this attack also does damage to Slither Wing, meaning that it cannot be utilized more than once unless a Bravery Charm is used
After sorting out these high-potential cards, you can get more accurate prices on a site like mavin.io or by clicking the Sold filter on an eBay search
In other TCG-related news, check out the Pikachu ex card from the SV-P Promotional Cards