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Grade Matrix

Graded
PSA 6
$8
Grade 7 guide
$12
Grade 8 guide
$20
PSA 9
$41
PSA 10
$205

PSA 10: Median of 2 sales, last 45 days · newest Oct 6, 2026 · checked Oct 27, 2026

PSA 9: Median of 11 PSA 9 sales in the last 90 days, latest 2026-10-17. Grade 9 guide (all graders): $41.

Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).

CGC
CGC 8
-
CGC 9
$31
CGC 10
$60
CGC P10
$150

Availability

Availabilityi
1/10G: 24/y
Graded: ~24 sales/yr (low) · Sales per year: ~203 sales/yr · Recent sales: 9 PSA 10 comps · Raw recent sales: 60 · Grade 9 recent sales: 30 · PSA 10 recent sales: 30 · Graded copies: 1,320 · PSA-10 delta 14.2%

TCGplayer Price History

NormalProduct 42431Fetched Oct 26, 3:30 AM
Weekly market
$1.88
week ending Oct 25
Weekly avg sale
$0.77
week ending Oct 25
Units sold (week)
21
week ending Oct 25

Card Value FAQ

How much is Professor Oak (Base Set #88) worth?

GemDelta shows Professor Oak (Base Set #88) at $1.87 market price (TCGplayer market). Its Delta multiple is 110x.

How much is a PSA 10 Professor Oak (Base Set #88) worth?

A PSA 10 Professor Oak (Base Set #88) is currently shown at $205, the median of 2 PSA 10 sales in the last 45 days (newest Oct 6, 2026).

Is Professor Oak (Base Set #88) worth grading?

GemDelta records a 23.0% gem rate for Professor Oak (Base Set #88), with 303 PSA 10 copies out of 1,320 total PSA grades and a 110x Delta. That describes the grading profile; it is not financial advice.

PSA 10 Recent sales

DateListingSale
Oct 6, 2026Professor Oak (PSA GEM MINT 10) - Unlimited - Pokemon Base Set 1999 #88/102 088/102$170.00
Sep 16, 2026Professor Oak PSA 10 1999 Pokemon Game Base Set 88 #88$240.00
Sep 7, 2026Pokemon Professor Oak Base Set Unlimited 88/102 PSA 10 88/102$149.50
Aug 19, 2026Pokemon 1999 Base Set Professor Oak 88/102 Trainer PSA 10 088/102$125.00
Aug 12, 2026Pokemon Cards: Base Set Uncommon: Professor Oak 88/102 PSA 10 #51$101.54
Aug 12, 2026PSA 10 GEM 💎 MINT 1999 BASE SET POKEMON TRAINER PROFESSOR OAK 88/102 #88 WOTC 88/102$148.92
Aug 12, 2026Pokemon Cards: Base Set Uncommon: Professor Oak 88/102 PSA 10 #51$162.44
Jul 24, 20262000 Pokemon Base II Set-Break #116 Professor Oak Gem Mint PSA 10$86.55
Jul 14, 20261999 Pokemon Base Set Unlimited #88 Professor Oak Gem Mt PSA 10 #88$130.00
Jun 18, 20261999 POKEMON GAME 88 PROFESSOR OAK TRAINER PSA 10 GEM MINT BASE SET UNLIMITED$174.99
May 21, 20261999 POKEMON BASE SET UNLIMITED #88 PROFESSOR OAK PSA 10 #88$112.50
May 10, 2026PSA 10 GEM 💎 MINT 1999 BASE SET POKEMON TRAINER PROFESSOR OAK 88/102 #88 WOTC 88/102$106.66

Showing the latest 12 of 13 stored PSA 10 comps.