How much is a PSA 10 Dragonair #18 worth?
The PSA 10 Dragonair #18 from Base Set (English) has a median market value of $456, with recent sales ranging $256 to $5,800 — based on 17 recent graded sales.
Is a PSA 10 Dragonair #18 worth more than ungraded?
Yes. A PSA 10 copy has a median value of $456 versus about $115 ungraded — roughly a 4.0× premium for the PSA 10 grade.
Where do PokéTT's PSA 10 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the PSA 10 grade — not a single outlier sale — so the mark reflects the true market.