2025 Bowman University Best Base Set John Mateer Green Mini-Diamond Refractor #27
2025
See all John Mateer cards & values2025 seasonOklahoma Sooners footballJohn Mateer career & card values
Uncommon
$12.99est. value (ungraded)
Prices updated 2026-10-24
Based on recorded sold prices how we price cards
Card number
#27
Year
2025
Parallel / variant
Green Mini-Diamond Refractor
John Mateer price history
$83.21▲ 0.0%
Oct 23 · $83.21 low$83.21 high · Oct 24
PSA 10 market value, one reading a day. One-day spikes that reverse the next day are left out.
Price by month
Average price of the 2025 Bowman University Best Base Set John Mateer Green Mini-Diamond Refractor #27 each month, from 1 recorded price reading. Prices are re-checked regularly; a month's average counts each day from that month's first reading at the price that held that day.
Recorded high
$12.99
Recorded low
$12.99
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $12.99 | — |
John Mateer prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $12.99 | Buy on eBay ↗ |
| PSA 8 | $16.47 | Buy on eBay ↗ |
| PSA 9 | $29.51 | Buy on eBay ↗ |
| Grade 9.5 | $56.57 | Buy on eBay ↗ |
| PSA 10 | $83.21 | Buy on eBay ↗ |
| BGS 10 | $108.00 | Buy on eBay ↗ |
| CGC 10 | $33.00 | Buy on eBay ↗ |
| SGC 10 | $50.00 | Buy on eBay ↗ |
Other versions of this John Mateer card
9 versions, each priced on its own. Most valuable first.
Yellow Lazer Refractor
$5.99
Not enough history yet
Raw $5.99PSA 9 $18.99PSA 10 $54.47Checked 2026-10-24
Live on eBay
Affiliate — we may earn a commission2025 Bowman University Best Base Set John Mateer Green Mini-Diamond Refractor #27 value & prices
The 2025 Bowman University Best Base Set John Mateer Green Mini-Diamond Refractor #27 is a Football card (Green Mini-Diamond Refractor parallel) released in 2025. Ungraded copies carry a market value of about $12.99.
An ungraded copy is worth around $12.99, a PSA 9 around $29.51, a PSA 10 (Gem Mint) around $83.21 and a pristine BGS 10 around $108.00. That's roughly a 6.4× 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?
With raw copies near $12.99 and top grades reaching $83.21, grading a sharp copy of this card can clearly pay for itself — the spread comfortably covers a typical ~$25.00 grading fee. The catch: only submit copies with strong centering, clean corners, and unmarked surfaces, because anything below a 9 usually erases the math.
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John Mateer2025 Bowman University Best Base Set2025Football cardsGreen Mini-Diamond RefractorPSA 10BGS 10card valueprice guide