Computer Error Wizards Black Star Promos #16
Computer Error is a Promo Pokémon card from Wizards Black Star Promos (#16), illustrated by Sumiyoshi Kizuki. It's a Rocket's Secret Machine Trainer card. Its current blended market value is $5.76 ungraded, with a PSA 10 worth around $147 — a gem-mint grading premium of roughly 25× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 3 July 2026.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10 | $147$125–$150 | |
| PSA 9 | $31$22–$40 | |
| PSA 8 | $25$23–$26 | |
| PSA 7 | $9$9–$9 |
Price history · raw near-mint
Recent sold prices
Real completed sale prices from Fanatics Collect — weekly and premier auctions plus marketplace Buy It Now sales, refreshed periodically. Grade read from the listing title.
Population across graders
Should you grade it?
after ~$71.46 grading fee → 25.5× the raw value
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $146.62 | $71.46 | +$69 | 25.5× |
| PSA 9 | $31.46 | $70.3 | −$45 | 5.5× |
| PSA 8 | $25.05 | $70.24 | −$51 | 4.3× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 1,996 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 37.8% | $147.00 |
| PSA 9 | 41.8% | $31.00 |
| PSA ≤8 | 20.4% | $6.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
We'll email you when this card's value crosses your target.
Where to buy
Cross-market prices
49% spreadCurrently 49% cheaper on PriceCharting than Cardmarket. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
🇪🇺 Cardmarket price · Europe
Card text
You may draw up to 5 cards, then your opponent may draw up to 5 cards. Your turn is over now (you don't get to attack).
Card details
More from Wizards Black Star Promos
Frequently asked questions
How much is Computer Error (Wizards Black Star Promos #16) worth?
As of 3 July 2026, Computer Error from Wizards Black Star Promos is worth approximately $5.76 ungraded (near-mint), and around $147 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Computer Error?
A PSA 10 (gem mint) Computer Error from Wizards Black Star Promos is worth around $147 — roughly 25× the raw ungraded value of $5.76.
Should I grade my Computer Error?
A PSA 10 sells for about $147 versus $5.76 raw — roughly a 25× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Computer Error rare?
Computer Error is a Promo card from Wizards Black Star Promos (card #16), illustrated by Sumiyoshi Kizuki. Its current blended market value is $5.76 ungraded.