So, they are purely for collecting/resale
If we look at TCGPlayer, we can check on the price trends over time, with the sales per day and the prices classified by day or a group of days, depending on which view you want of the data
16 Elesa's Sparkle Ultra Rare Full Art $16.20 A powerful card in any deck based on the Fusion Strike mechanic, Elesa's Sparkle takes two of your Fusion Strike Pokemon and gives them a bit of a boost
While Konami does not print as many FTK-focused cards in the modern era, they have occasionally released some retro support that has been annoying to deal with in the meta
I think it is a really cool deck, but I feel like it is still a different one
Finally, take a close look at the edge of the card since a real one will have a very thin sheet of black between the two sides, which fake cards wont have