1999 Upper Deck Wonder Years Ken Griffey Jr #WY10
1999
See all Ken Griffey Jr cards & values1999 seasonSeattle MarinersKen Griffey Jr. career & card values
$4.29est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 1999 Upper Deck Wonder Years Ken Griffey Jr #WY10 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.
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $4.29 | — |
Ken Griffey Jr prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $4.29 | Buy on eBay ↗ |
| PSA 8 | $17.30 | Buy on eBay ↗ |
| PSA 9 | $26.00 | Buy on eBay ↗ |
| Grade 9.5 | $29.00 | Buy on eBay ↗ |
| PSA 10 | $122.33 | Buy on eBay ↗ |
| BGS 10 | $159.00 | Buy on eBay ↗ |
| CGC 10 | $73.00 | Buy on eBay ↗ |
| SGC 10 | $73.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission1999 Upper Deck Wonder Years Ken Griffey Jr #WY10 value & prices
The 1999 Upper Deck Wonder Years Ken Griffey Jr #WY10 is a Baseball card released in 1999. Ungraded copies carry a market value of about $4.29.
An ungraded copy is worth around $4.29, a PSA 9 around $26.00, a PSA 10 (Gem Mint) around $122.33 and a pristine BGS 10 around $159.00. That's roughly a 29× 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 $4.29 and top grades reaching $122.33, 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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