[JasonL]

You said this was an in-person show submission. Was there some discussion between you and SGC at the time -some dialogue wher you indicated that you wanted to be called if there was significant discrepancies in the grades, or was there any talk at all about the best way to submit the cards (e.g. what service level offered you protection against this type of outcome, etc)...?

As much as this stinks, I would think that the only fair gripe you would really have is if something occurred that was different than what you expected based upon your interaction with SGC. I certainly sympathize, but I'm not confident I have enough info to actually judge fairness, etc.

Thanks for the heads-up regardless of PSA vs SGC and fairness, etc, because it is a valuable lesson if you have a concern towards preserving card value when submitting.