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PSA 10: PriceCharting · last PSA 10 sale $560.00 on May 30, 2026 · checked Oct 26, 2026
PSA 9: Median of 1 PSA 9 sale in the last 90 days, latest 2026-07-29. Grade 9 guide (all graders): $43.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Maintenance (Base Set #83) at $2.99 market price (TCGplayer market). Its Delta multiple is 185x.
A PSA 10 Maintenance (Base Set #83) is currently shown at $552. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.
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 185x Delta. That describes the grading profile; it is not financial advice.
| Date | Listing | Sale |
|---|---|---|
| May 30, 2026 | 1999 POKEMON BASE SET UNLIMITED #83 MAINTENANCE PSA 10 #83 | $560.00 |