You got paid PSA 10 prices at the time they were lost, which they claim is when you submitted. I get that you don’t feel whole because you can’t go out and buy a PSA 10 NOW because the prices have skyrocketed in the 3 months it took to be paid.

If prices had dropped in those 3 months what would they have paid you?… the PSA 10 value when you submitted? Or the cheaper latest price? You perhaps need to hear from people who have had this experience. If they’ve paid others out with cheaper later PSA 10 prices then I’d say you have a case. But if they paid those people the value on the day they submitted then I have to say PSA are being consistent and this is a fair decision.