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PSA 10: PriceCharting; refreshed Sep 10, 2026
GemDelta shows Bill's Maintenance (Expedition #137) at $0.69 market price (TCGplayer market). Its Delta multiple is 34.1x.
A PSA 10 Bill's Maintenance (Expedition #137) is currently shown at $40.27. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 38.8% gem rate for Bill's Maintenance (Expedition #137), with 31 PSA 10 copies out of 80 total PSA grades and a 34.1x Delta. That describes the grading profile; it is not financial advice.