At first, I thought this might have something to do with the order that the decks were previewed (in theory, decks that are previewed first will have more time for their cards to decrease in price), but considering Sultai Morph was the first decklist released, this doesn't seem to be the case
Product Description Megaevolution pushes the power of Latias beyond limits
(Did you know that Demonic CovenantDemonic Covenant is the only Kindred Enchantment that mills you?) Oh hey
Even for the newest sets and promos, such as the picnic Pikachu (which has seen an English, Portuguese, and French release only so far to my knowledge)
There is still a lot to understand and learn in the game, however, with a lot of associated game mechanics - like ink, lore, and glimmers - intermixing, with even more to come when new chapters are released in the future