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PSA 10: PriceCharting · last PSA 10 sale $374.99 on Jun 29, 2026 · checked Oct 25, 2026
Grade 9: No recent PSA 9 sales. PriceCharting Grade 9 guide, mixing PSA, CGC, BGS, SGC and TAG 9s.
Grade 7 and Grade 8 are PriceCharting guides across all graders (PSA, CGC, BGS, SGC, TAG).
GemDelta shows Mr. Stone's Project (Holon Phantoms #88) at $20.26 market price (TCGplayer market). Its Delta multiple is 18.5x.
A PSA 10 Mr. Stone's Project (Holon Phantoms #88) is currently shown at $375. GemDelta labels this as a PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 11.9% gem rate for Mr. Stone's Project (Holon Phantoms #88), with 5 PSA 10 copies out of 42 total PSA grades and a 18.5x Delta. That describes the grading profile; it is not financial advice.
The Reverse Holo version of Mr. Stone's Project (Holon Phantoms #88) is shown at $20.26 market price. That value is for this stored card variant, not the base printing.
| Date | Listing | Sale |
|---|---|---|
| Jun 29, 2026 | Pokemon Mr. Stone's Project EX Holon Phantoms Reverse Holo 88/110 PSA 10 88/110 | $374.99 |