2025-26 Topps Cosmic Chrome Extraterrestrial Talent Cooper Flagg Gold Interstellar Refractor #ET-11
2026
See all Cooper Flagg cards & values2025 seasonDuke Blue Devils men's basketballDallas MavericksCooper Flagg career & card values
Epic
$490.00est. value (ungraded)
Prices updated 2026-10-26
Based on recorded sold prices how we price cards
Card number
#ET-11
Year
2026
Parallel / variant
Gold Interstellar Refractor
Price by month
Average price of the 2025-26 Topps Cosmic Chrome Extraterrestrial Talent Cooper Flagg Gold Interstellar Refractor #ET-11 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.
Recorded high
$490.00
Recorded low
$490.00
| Month | Source | Average | Range |
|---|---|---|---|
| Oct 2026 | Market value | $490.00 | — |
Cooper Flagg prices by grade
| Grade | Value | eBay |
|---|---|---|
| Ungraded | $490.00 | Buy on eBay ↗ |
| PSA 8 | $444.95 | Buy on eBay ↗ |
| PSA 9 | $771.61 | Buy on eBay ↗ |
| Grade 9.5 | $1,459.50 | Buy on eBay ↗ |
| PSA 10 | $2,198.73 | Buy on eBay ↗ |
| BGS 10 | $2,858.00 | Buy on eBay ↗ |
| CGC 10 | $879.00 | Buy on eBay ↗ |
| SGC 10 | $1,319.00 | Buy on eBay ↗ |
Other versions of this Cooper Flagg card
5 versions, each priced on its own. Most valuable first.
Live on eBay
Affiliate — we may earn a commission2025-26 Topps Cosmic Chrome Extraterrestrial Talent Cooper Flagg Gold Interstellar Refractor #ET-11 value & prices
The 2025-26 Topps Cosmic Chrome Extraterrestrial Talent Cooper Flagg Gold Interstellar Refractor #ET-11 is a Basketball card (Gold Interstellar Refractor parallel) released in 2026. Ungraded copies carry a market value of about $490.00.
An ungraded copy is worth around $490.00, a PSA 9 around $771.61, a PSA 10 (Gem Mint) around $2,198.73, a pristine BGS 10 around $2 and858.00. That's roughly a 4.5× 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 $490.00 and top grades reaching $2,198.73, 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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Cooper Flagg2025-26 Topps Cosmic Chrome Extraterrestrial Talent2026Basketball cardsGold Interstellar RefractorPSA 10BGS 10card valueprice guide