2021 Donruss Optic Retro Signature Series Brendan McKay #RET-BM
2021
$1.17est. value (ungraded)
Prices updated 2026-09-26
Based on recorded sold prices how we price cards
Recent recorded prices
1 recorded price point for the 2021 Donruss Optic Retro Signature Series Brendan McKay #RET-BM from our sales and market data.
| Date | Source | Price |
|---|---|---|
| Sep 26, 2026 | Recorded sale | $1.17 |
Brendan McKay prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.17 | Buy on eBay ↗ |
| PSA 8 | $5.92 | Buy on eBay ↗ |
| PSA 9 | $11.29 | Buy on eBay ↗ |
| Grade 9.5 | $22.11 | Buy on eBay ↗ |
| PSA 10 | $31.89 | Buy on eBay ↗ |
| BGS 10 | $41.00 | Buy on eBay ↗ |
| CGC 10 | $19.00 | Buy on eBay ↗ |
| SGC 10 | $19.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission2021 Donruss Optic Retro Signature Series Brendan McKay #RET-BM value & prices
The 2021 Donruss Optic Retro Signature Series Brendan McKay #RET-BM is a Baseball card released in 2021. Ungraded copies carry a market value of about $1.17.
An ungraded copy is worth around $1.17, a PSA 9 around $11.29, a PSA 10 (Gem Mint) around $31.89 and a pristine BGS 10 around $41.00. That's roughly a 27× premium for a gem-mint copy over raw — one of the clearest signals that condition-sensitive buyers dominate this card's market.
Is it worth grading?
The spread between raw ($1.17) and top-graded ($31.89) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.
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