Grade Matrix
Graded
PSA 6
$9
Grade 7 guide
$13
Grade 8 guide
$21
PSA 9
$44
PSA 10
$135
PSA 10: Median of 6 sales, last 45 days · newest Oct 25, 2026 · checked Oct 27, 2026
PSA 9: Median of 13 PSA 9 sales in the last 90 days, latest 2026-10-01. Grade 9 guide (all graders): $32.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
CGC
CGC 8
$20
CGC 9
$15
CGC 10
$29
CGC P10
$127
Availability
Availabilityi
1/10G: 12/y
Graded: ~12 sales/yr (low) · Sales per year: ~277 sales/yr · Recent sales: 9 PSA 10 comps · Raw recent sales: 60 · Grade 9 recent sales: 30 · PSA 10 recent sales: 30 · Graded copies: 1,441 · PSA-10 delta 10.3%
TCGplayer Price History
NormalProduct 42395Fetched Oct 26, 3:30 AM
Weekly market
$0.81
week ending Oct 25
Weekly avg sale
$0.58
week ending Oct 25
Units sold (week)
12
week ending Oct 25
Card Value FAQ
How much is a PSA 10 Koffing (Base Set #51) worth?
A PSA 10 Koffing (Base Set #51) is currently shown at $135, the median of 6 PSA 10 sales in the last 45 days (newest Oct 25, 2026).