
What the evidence says
Tier evidence · Stale
PSA 10$4,537.5030-day average · Provider-reported approximate sale count: 70 · Evidence date August 4, 2026 · Stale
PSA 9$436.9330-day average · Provider-reported approximate sale count: 144 · Evidence date September 8, 2026 · Aging
PSA 8$183.5730-day average · Provider-reported approximate sale count: 214 · Evidence date September 7, 2026 · Aging
PSA 10 versus PSA 9 30-day-average spread: $4,100.57 · 938.50% premium · 10.38x