Grade Matrix
Graded
PSA 6
-
Grade 7 guide
$14
Grade 8 guide
$16
PSA 9
$21
PSA 10
$355
PSA 10: 1 sale, last 45 days · Oct 18, 2026 · checked Oct 25, 2026
PSA 9: Median of 3 PSA 9 sales in the last 90 days, latest 2026-10-07. Grade 9 guide (all graders): $25.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
CGC
CGC 8
-
CGC 9
-
CGC 10
$25
CGC P10
$1,100
Availability
Availabilityi
1/10G: 4/y
Graded: ~4 sales/yr (extremely low) · Sales per year: ~94 sales/yr · Recent sales: 1 PSA 10 comp · Raw recent sales: 60 · Grade 9 recent sales: 30 · PSA 10 recent sales: 24 · Graded copies: 342
TCGplayer Price History
1st EditionProduct 83964Fetched Oct 25, 3:31 AM
Weekly market
$2.98
week ending Oct 24
Weekly avg sale
$2.12
week ending Oct 24
Units sold (week)
1
week ending Oct 24
Card Value FAQ
How much is Brock's Geodude (Gym Heroes #66) worth?
GemDelta shows Brock's Geodude (Gym Heroes #66) at $2.98 market price (TCGplayer market). Its Delta multiple is 119x.
How much is a PSA 10 Brock's Geodude (Gym Heroes #66) worth?
A PSA 10 Brock's Geodude (Gym Heroes #66) is currently shown at $355, the only PSA 10 sale in the last 45 days (Oct 18, 2026).
Is Brock's Geodude (Gym Heroes #66) worth grading?
GemDelta records a 17.5% gem rate for Brock's Geodude (Gym Heroes #66), with 60 PSA 10 copies out of 342 total PSA grades and a 119x Delta. That describes the grading profile; it is not financial advice.
PSA 10 Recent sales
| Date | Listing | Sale |
|---|---|---|
| Oct 18, 2026 | Pokemon Card PSA 10 1st Edition Brock's Geodude 66/132 Gym Heroes | $354.50 |