You're at a point where you want to find out what they're worth so you can continue collecting or buy yourself something nice
Selling your cards on well-known sites will help you attract buyers and get the best prices for your cards
Whether you play one, the other, or both, your Adventure deck is very likely to be aggressive at least all the current builds are and its going to be more resilient than most aggro decks, because both the build-arounds provide card advantage and the Adventure mechanic is in itself a source of it
Some players only play Eternal formats and have one deck they always play so they may only need to own about a hundred cards (one deck plus sideboard options)
And that is heavily influenced by trends, nostalgia, and celebrity attention, all of which can shift in a moment
With its ties to both spectral and fiery elements, Chandelure offers a blend of themes that appeals to players who appreciate Pokmon with depth and character