[Important Notice Regarding the Condition of the Outer Carton]
Key drivers include: Playability (Commander or Standard demand) Rarity and Frame (borderless, ripple foil) Supply from drafts/pre-releases (how many copies entered the market) Secondary market listing (TCGplayer market prices) After, you can prioritise which cards to keep, sell or trade based on how these factors affect your expected value and deck plans
It is tough to accept the fact that you bought a fake product
But if they can get a turn of items against it, it can be game-breaking, so run a Hex Manic, and then you can VS Seeker (PHF 109/119) for Hex Maniac in the same turn so you can use it again whenever you need it
The qualifying total must also be met in a single purchase
For the 50 damage it does to the opposing Active Pokemon, Golem does 20 to itself and 10 to every Benched Pokemon on both sides of the battlefield