Yeah I know, lots of conflicting info out there. I am just personally not convinced much 1st Edition Base exists compared to Shadowless/Unlimited and also compared to other 1st Edition WOTC releases, specifically the holos & rares. The 10000 rumoured figure for 1st Edition comes from this article: www.psacard.com/articles/articleview/8911/psa-set-registry-collecting-1999-poke-mon-1st-edition-gaming-card-base-series-started-all
The other reason 10000 holos for 1st Edition seems somewhat realistic to me is because: the vast majority of Charizards appear to be graded at PSA and yet its still less than 4000 to this day in the registry. Of course you have some BGS and CGC ones out there but they’re very low numbers. Could there even be 6000 more out there? If so they aren’t for sale or remain ungraded which is entirely possible. I’m just not convinced there’s millions or even 100s of thousands of 1st Edition Base holos out there, but I could be totally wrong.