1989 Upper Deck Mark McGwire #300
1989
$1.63est. value (ungraded)
Prices updated 2026-09-14
Based on recorded sold prices how we price cards
Recent recorded prices
1 recorded price point for the 1989 Upper Deck Mark McGwire #300 from our sales and market data.
| Date | Source | Price |
|---|---|---|
| Jun 6, 2026 | Recorded sale | $1.63 |
Mark McGwire prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $1.63 | Buy on eBay ↗ |
| PSA 7 | $6.50 | Buy on eBay ↗ |
| PSA 8 | $9.33 | Buy on eBay ↗ |
| PSA 9 | $17.24 | Buy on eBay ↗ |
| Grade 9.5 | $19.00 | Buy on eBay ↗ |
| PSA 10 | $58.93 | Buy on eBay ↗ |
| BGS 10 | $77.00 | Buy on eBay ↗ |
| CGC 10 | $35.00 | Buy on eBay ↗ |
| SGC 10 | $26.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1989 Upper Deck Mark McGwire #300 value & prices
The 1989 Upper Deck Mark McGwire #300 is a Baseball card released in 1989. Ungraded copies carry a market value of about $1.63.
An ungraded copy is worth around $1.63, a PSA 9 around $17.24, a PSA 10 (Gem Mint) around $58.93 and a pristine BGS 10 around $77.00. That's roughly a 36× 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 $1.63 and top grades reaching $58.93, 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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