2018 Finest Base Set Eric Thames Purple Refractor #18
2018
See all Eric Thames cards & values2018 seasonSeattle MarinersMilwaukee BrewersEric Thames career & card values
$0.25est. value (ungraded)
Prices updated 2026-10-22
Based on recorded sold prices how we price cards
Price by month
Average price of the 2018 Finest Base Set Eric Thames Purple Refractor #18 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 | $0.25 | — |
Eric Thames prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $0.25 | Buy on eBay ↗ |
| PSA 9 | $29.99 | Buy on eBay ↗ |
| Grade 9.5 | $33.00 | Buy on eBay ↗ |
Live on eBay
Affiliate — we may earn a commission2018 Finest Base Set Eric Thames Purple Refractor #18 value & prices
The 2018 Finest Base Set Eric Thames Purple Refractor #18 is a Baseball card (Purple Refractor parallel) released in 2018. Ungraded copies carry a market value of about $0.25.
An ungraded copy is worth around $0.25 and a PSA 9 around $29.99.
Is it worth grading?
The spread between raw ($0.25) and top-graded ($29.99) copies is fairly tight, so grading this card only makes financial sense for truly flawless copies — or for collectors who simply prefer slabbed cards for protection and display.