2025-26 Finest Base Set Stephon Castle Blue Geometric Refractor #100
2026
See all Stephon Castle cards & values$16.60est. value (ungraded)
Prices updated 2026-10-25
Based on recorded sold prices how we price cards
Stephon Castle price history
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 2025-26 Finest Base Set Stephon Castle Blue Geometric Refractor #100 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 | $16.60 | — |
Stephon Castle prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $16.60 | Buy on eBay ↗ |
| PSA 8 | $19.79 | Buy on eBay ↗ |
| PSA 9 | $35.41 | Buy on eBay ↗ |
| Grade 9.5 | $67.86 | Buy on eBay ↗ |
| PSA 10 | $101.04 | Buy on eBay ↗ |
| BGS 10 | $131.00 | Buy on eBay ↗ |
| CGC 10 | $40.00 | Buy on eBay ↗ |
| SGC 10 | $61.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission2025-26 Finest Base Set Stephon Castle Blue Geometric Refractor #100 value & prices
The 2025-26 Finest Base Set Stephon Castle Blue Geometric Refractor #100 is a Basketball card (Blue Geometric Refractor parallel) released in 2026. Ungraded copies carry a market value of about $16.60.
An ungraded copy is worth around $16.60, a PSA 9 around $35.41, a PSA 10 (Gem Mint) around $101.04 and a pristine BGS 10 around $131.00. That's roughly a 6.1× 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 $16.60 and top grades reaching $101.04, 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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