2021 Bowman Chrome Prospect Autographs Michael Guldberg Green Refractor #CPA-MG
2021
$2.38est. value (ungraded)
Prices updated 2026-10-16
Based on recorded sold prices how we price cards
Michael Guldberg price history
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Recent recorded prices
3 recorded price points for the 2021 Bowman Chrome Prospect Autographs Michael Guldberg Green Refractor #CPA-MG from our sales and market data.
| Date | Source | Price |
|---|---|---|
| Oct 16, 2026 | Market value | $2.38 |
| Oct 15, 2026 | Market value | $2.38 |
| Oct 14, 2026 | Market value | $2.38 |
Michael Guldberg prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $2.38 | Buy on eBay ↗ |
| PSA 9 | $26.00 | Buy on eBay ↗ |
| Grade 9.5 | $29.00 | Buy on eBay ↗ |
| PSA 10 | $31.00 | Buy on eBay ↗ |
| BGS 10 | $40.00 | 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 Bowman Chrome Prospect Autographs Michael Guldberg Green Refractor #CPA-MG value & prices
The 2021 Bowman Chrome Prospect Autographs Michael Guldberg Green Refractor #CPA-MG is a Baseball card (Green Refractor parallel) released in 2021. Ungraded copies carry a market value of about $2.38.
An ungraded copy is worth around $2.38, a PSA 9 around $26.00, a PSA 10 (Gem Mint) around $31.00 and a pristine BGS 10 around $40.00. That's roughly a 13× 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 ($2.38) and top-graded ($31.00) 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.