The Brief
The 1999 Pokémon Base Set Blastoise Holo PSA 9 is tracked live by CardVault across eBay, TCGplayer & 130point.
Grail tier steady; PSA 9 filling gap as PSA 10 comps hold 5-figure floor.
Open it in CardVault to see the live verdict, supply count, and the full Buyer's Brief.