I'm sure there are some personal preferences againt pressing, same as for date stamps or printer's creases. But I believe the vast majority are aren't anti-treatments as much as they are pro-getting what they pay for.
A pressed book is what it is and should be priced accordingly. Just as a rare unusual vintage survivor is what it is and should be priced accordingly. It's pretending the two are the same, labeling the two the same, and pricing the two the same that confuses and frustrates consumers imho.
That's more or less my position.
The vast majority believes in paying full price for pressed books, and the vast majority believes in paying very little for trimmed books. It doesn't really matter, why the public feels that way, or if it doesn't really make sense to someone that feels differently. Logical, phillisophical, psycogical, whatever the reason, that's the way it is. People are free to make thier own choices and as of right now most choose to severely dislike trimming and most choose to care little to none about non-disassembly pressing. I don't see that changing, even if there were no sure fire way to know if the books were trimmed. If that were the case, I believe it would have a significant impact on the financial status of the hobby.
As far as OO books are concerned, there may be a greater demand, but, unless it is a Pedigree type SA or GA collection, the majority of the demand - over and above the usual demand- probably comes, more, from the fact that it may have more potential, not so much because of it's "pure" state.
