2021 Finest Base Set Buster Posey Purple Aqua Vapor Refractor #5
2021
See all Buster Posey cards & values2021 seasonSan Francisco GiantsBuster Posey career & card values
$3.00est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 2021 Finest Base Set Buster Posey Purple Aqua Vapor Refractor #5 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 | $3.00 | — |
Buster Posey prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $3.00 | Buy on eBay ↗ |
| PSA 9 | $8.00 | Buy on eBay ↗ |
| Grade 9.5 | $9.00 | Buy on eBay ↗ |
| PSA 10 | $54.95 | Buy on eBay ↗ |
| BGS 10 | $71.00 | Buy on eBay ↗ |
| CGC 10 | $33.00 | Buy on eBay ↗ |
| SGC 10 | $33.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission2021 Finest Base Set Buster Posey Purple Aqua Vapor Refractor #5 value & prices
The 2021 Finest Base Set Buster Posey Purple Aqua Vapor Refractor #5 is a Baseball card (Purple Aqua Vapor Refractor parallel) released in 2021. Ungraded copies carry a market value of about $3.00.
An ungraded copy is worth around $3.00, a PSA 9 around $8.00, a PSA 10 (Gem Mint) around $54.95 and a pristine BGS 10 around $71.00. That's roughly a 18× 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 $3.00 and top grades reaching $54.95, 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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