How much is a PSA 8 Venusaur #18 worth?
The PSA 8 Venusaur #18 from Base Set 2 (English) has a median market value of $178, with recent sales ranging $156 to $200 — based on 2 recent graded sales.
Is a PSA 8 Venusaur #18 worth more than ungraded?
Yes. A PSA 8 copy has a median value of $178 versus about $54.99 ungraded — roughly a 3.2× premium for the PSA 8 grade.
Where do PokéTT's PSA 8 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the PSA 8 grade — not a single outlier sale — so the mark reflects the true market.