yugioh old cards Gallery of Yu-Gi-Oh! anime (Duelist Kingdom) | Yu-Gi-Oh! Wiki The Most Valuable Yu-Gi-Oh Cards

Quaquaval ex Deluxe Battle Deck (available September 1, 2023): This is a new product featuring reprint cards only and no new promo cards

It takes an entire year from start to finish to publish a new set of the Pokemon Trading Card Game (TCG)

I have friends who are big comic book collectors ranging 40-70 yrs old who couldnt care less about Pokemon but have gone out of their way to compliment my Masago Umbreon & Mewtwo as noted by @c0ll3ct0r I also have nieces and nephews ranging from 4-7 yrs old whom (Id assume would gravitate to modern artwork) but adore base set art as noted by @mogrin Thats just my experience and YMMV but if I had to choose one I would pick this

Go on an adventure in the Pokmon world with the super cool Mega Evolution Kadabra #055/132 Reverse Holo Pokmon card

In theory, nothing would stop players from creating a third-party marketplace on a subreddit or Discord server where people who have tons of duplicates sell them to the highest bidders