Libra 58
How can you find out if a deck is going to be OOP? Is there any lists or something else to look for?
I imagine that nearly everything eventually goes out of print. Are you thinking of buying a deck in hopes that it will become OOP?
It is also rare for a deck that goes out of print to become a "superstar" on the resale market. Most decks that go OOP do so because of a lack of interest and do not go up in value. Books go OOP, too, and today's bestseller is in the bargain bin tomorrow.
Sometimes a price is inflated artificially, as you can see with many "limited edition" decks showing up on eBay at exorbitant prices days after they are published. Even some new decks are published as limited editions merely as a marketing ploy.
Some decks go through a period of being worthless and years later suddenly become sought after. When I joined AT people were trying to get rid of their "greenie" Thoths, and today it is a collectors' item.
Good advice is to buy the decks you like and can afford. Did you buy the Vanessa or Gaia because you liked them or because they were going out of print?