psa 9 hasnt really done much for most cards and any actual “collector” should really just be buying 9s if they wanna focus on value for card quality esp since no one including psa themselves can actually differentiate between a 9 and a 10 
whats a psa 9 yanma gone from maybe 100 to 200 bux from 2024 to 2026 whereas a psa 10 has gone from 3k to 66k