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Computer Error — PSA 4 Price & Value
Unnumbered Vintage Promos (pre-2001) · Japanese
PSA 4 — median market value
$9
Range $9–$9PSA 4 reference value≈ 2.2× the ungraded price
The PSA 4 Computer Error from Unnumbered Vintage Promos (pre-2001) (Japanese) has a median market value of $9, an estimated reference value from aggregated sold data — about 2.2× the ~$4 ungraded price. See the full price history and live chart on the Computer Error card page.
Computer Error price by grade
Frequently asked
How much is a PSA 4 Computer Error worth?
The PSA 4 Computer Error from Unnumbered Vintage Promos (pre-2001) (Japanese) has a median market value of $9 — an estimated reference value from aggregated sold data.
Is a PSA 4 Computer Error worth more than ungraded?
Yes. A PSA 4 copy has a median value of $9 versus about $4 ungraded — roughly a 2.2× premium for the PSA 4 grade.
Where do PokéTT's PSA 4 prices come from?
PokéTT tracks real graded sales across eBay, Yahoo Auctions and Mercari, then shows the median within the PSA 4 grade — not a single outlier sale — so the mark reflects the true market.