Our top sorcery is also...pricey since it's on the Reserved List, but it costs just three, and then everyone shuffles their deck, graveyard and hand and draws a brand new hand
Buy the Pokmon Destined Rivals booster box at Walmart (US) or eBay (UK) here
Youd have to be crazy to print that with no downsides, but red has you covered with the trifecta of Final Fortune, Last Chance, and Warrior's Oath, which are functionally the same card (though Last Chance has the superior art with that borderless reprint in Dominaria Remastered )
You want to know the truth
Finally, if you carry multiple decks with you, the Prime X4 Deck Box holds 4 single sleeved decks and has plenty of room for dice and tokens
The most profitable place to sell Pokmon cards is usually eBay or TCGPlayer since competitive buyers raise prices, especially for high-grade or rare pulls