Another Barrow seller recently struck it lucky after selling a Pokmon card for more than 2,000.
Vulpix 138/132 (Illustration Rare) Gameplay-wise, Vulpix wont shake the meta with Stampede and Combustion, which are serviceable but underpowered
Then, if not, you now have two chances to -3 her and kill some stuff, increasing her long-term value
This mostly matters if youre actually playing the Pokemon Trading Card Game (because older cards are eventually deemed ineligible to use in decks) but you may want to avoid Sword & Shield cards if you know that a kid has been collecting for a while, because that kid likely has a lot of those cards already
You can check the online pricing very easily on Cardhoarder or use their loan program to gain flexibility in what cards you can play
For all three of the other sets, non-foil cards cost $29.99, and the foil versions are $39.99