how to find out the value of my pokemon cards accurately a Pokémon card collection? How do I know how

Format: Commander Estimated Bracket: 3 (1 Game Changer) User Submitted Deck Deck Date: May 25, 2020 Archetype: Yeva, Nature's Herald Loading

#5 Team Rockets Mewtwo ex UR (~6,000 / ~$40) The gold-bordered Ultra Rare variant

As the Bank of America report states, Wizards has been overproducing Magic cards which has propped up Hasbro's recent earnings results but is destroying the long-term value of the brand." This isnt strictly a precon issue, as it also encompasses the frequent reprint sets like Double Masters 2022, Dominaria Remastered, Jumpstart, and the direct-to-consumer Secret Lair releases

Drizzi has a decent power level but it is a clumsy card

10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield

Tap Turning a card sideways - either for mana, to attack, activate an ability or something else