how to grade a pokemon card Someone who's knowledgeable about the grading system please help, do the Sub grades give it an overall 4? The average for the is 5.75 as u can see in How to Grade Pokémon Cards
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Check out our article on How Grading Works for Pokemon Cards for a break down of the grading criteria and the grading scales for the 3 major Pokemon grading companies (PSA, CGC, and BGS)

At any rate, no collector in their right mind would turn down a PSA 10 card from the OG glory days of the Pokmon TCG

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No, I don't

its still playing anyway
Yes, but ensure you're purchasing from trusted sellers with strong reviews