
What the evidence says
Tier evidence · Aging
PSA 10$1,391.5230-day average · Provider-reported approximate sale count: 58 · Evidence date September 2, 2026 · Aging
PSA 9$652.3530-day average · Provider-reported approximate sale count: 162 · Evidence date September 11, 2026 · Aging
PSA 8$296.3930-day average · Provider-reported approximate sale count: 229 · Evidence date September 19, 2026 · Fresh
PSA 10 versus PSA 9 30-day-average spread: $739.17 · 113.31% premium · 2.13x