I used to think Quick Opinion's conservative judgements was mostly an okay thing, still a valuable service to ward unsuspecting buyers away from bad items. The more I thought about it the more I realized being quite conservative with the results and declaring what ultimately amounts to many good items as "Likely Not Genuine" depletes most or any good the service might do for buyers.
I can almost understand (although I don't think it's a great excuse) being uncomfortable with labeling too many items "Likely Genuine" that they could potentially have to fail in the future. Some people would feel quite cheated getting a "Likely Genuine" quick opinion only to have it fail the full authentication exam once they'd bought it.
It seems to me, then, that if the quick opinion service continues, and they're still bent on being too conservative with the results, they should say more often that they cannot render an opinion and refund the fee. That's the truth of the matter, isn't it? So for any item that's not an absolute forgery/secretarial etc. or what they estimate to be an absolute authentic example, it should be said that an opinion cannot be rendered. That would give the service a little more value. It would at least help unsuspecting buyers stay away from blatant forgeries.