Grade Matrix
Graded
PSA 6
$29
Grade 7 guide
$15
Grade 8 guide
$29
PSA 9
$164
PSA 10
$425
PSA 10: Last PSA 10 sale $425.00 on Jun 16, 2025 · checked Oct 26, 2026
PSA 9: Median of 2 PSA 9 sales in the last 90 days, latest 2026-08-24. Grade 9 guide (all graders): $154.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
CGC
CGC 8
-
CGC 9
-
CGC 10
$370
CGC P10
-
Availability
Availabilityi
2/10G: —
Graded: insufficient data · Sales per year: ~13 sales/yr · Raw recent sales: 40 · Grade 9 recent sales: 14 · PSA 10 recent sales: 3 · Graded copies: 136
TCGplayer Price History
Reverse HolofoilProduct 87879Fetched Oct 21, 3:37 AM
Weekly market
$27.78
week ending Oct 19
Weekly avg sale
$20.66
week ending Oct 19
Units sold (week)
1
week ending Oct 19
Card Value FAQ
How much is a PSA 10 Onix (Fire Red & Leaf Green #42) worth?
A PSA 10 Onix (Fire Red & Leaf Green #42) is currently shown at $425. GemDelta labels this as the latest stored PSA 10 sale, which is older than the sales window; no sales were found inside that window.
What is the Reverse Holo version of Onix (Fire Red & Leaf Green #42) worth?
The Reverse Holo version of Onix (Fire Red & Leaf Green #42) is shown at $27.78 market price. That value is for this stored card variant, not the base printing.
PSA 10 past sales
| Date | Listing | Sale |
|---|---|---|
| Jun 16, 2025 | Pokemon Onix EX Fire Red & Leaf Green Reverse Holo #42 PSA 10 Gem Mint | $425.00 |
| May 15, 2024 | PSA 10 GEM MINT Onix Reverse Holo 42/112 EX Fire Red & Leaf Green Pokemon Card | $135.00 |
| Mar 31, 2024 | PSA 10 Onix 42/112 EX Fire Red Leaf Green Reverse Foil Pokemon Card | $94.27 |