Grade Matrix
PSA
PSA 6
$20
PSA 7
$31
PSA 8
$48
PSA 9
$75
PSA 10
$400
PSA 10: 45-day PSA 10 sold-comp median
CGC
CGC 8
-
CGC 9
$40
CGC 10
$51
CGC P10
-
Availability
Availabilityi
1/10G: 24/y
Graded: ~24 sales/yr (low) · Sales per year: ~162 sales/yr · Recent sales: 11 PSA 10 comps · Graded copies: 1,752 · PSA-10 delta 19.2%
TCGplayer Price History
1st EditionProduct 107080Fetched Sep 10, 3:47 AM
TCGplayer market
$9.50
Latest avg sale
$8.00
Units sold
137
Card Value FAQ
How much is Maintenance (Base Set #83) worth?
GemDelta shows Maintenance (Base Set #83) at $9.50 market price (TCGplayer market). Its Delta multiple is 38.1x.
How much is a PSA 10 Maintenance (Base Set #83) worth?
A PSA 10 Maintenance (Base Set #83) is currently shown at $400. GemDelta labels this as a 45-day PSA 10 sold-comp median.
Is Maintenance (Base Set #83) worth grading?
GemDelta records a 19.5% gem rate for Maintenance (Base Set #83), with 342 PSA 10 copies out of 1,752 total PSA grades and a 38.1x Delta. That describes the grading profile; it is not financial advice.
PSA 10 Recent sales
| Date | Sale |
|---|---|
| Jul 30, 2026 | $400.00 |
| Jul 16, 2026 | $110.04 |
| Jul 13, 2026 | $430.00 |
| Jul 4, 2026 | $359.86 |
| Jun 9, 2026 | $599.00 |
| May 24, 2026 | $349.99 |
| May 19, 2026 | $402.99 |
| May 13, 2026 | $290.91 |
| May 13, 2026 | $290.91 |
| May 11, 2026 | $403.00 |
| May 3, 2026 | $234.52 |
| Apr 26, 2026 | $800.00 |
Showing the latest 12 of 15 stored PSA 10 comps.