I think the cost of the game is what would get me, here. It would take a lot of convincing for me to essentially re-buy a rule set I already own. It would take even more convincing for me to try and persuade my players to shell out $50 (or whatever the discounted price is at Amazon) for a book they'd only need half of and for rules they mostly already have.
I see what you're saying, but for me and for most folks I game with, that $10 PDF would be an additional cost above & beyond the book's cost, and not any kind of replacement. I don't think PDFs are in any way replacements for physical books at the table. (They're dandy away from the table, but when we're talking 3.5, I care a lot more about at-table use, especially for spell descriptions and the like.)Don't forget about the $10 PDF. The low cost of entry makes it easier for your players to take a look, and they might really like what they see.
Well, that rocks! I have no doubt it's an outstanding and well-made game.Also, my book came yesterday, and after going through it a couple times, I can assure you that purchasing the PFRPG is not re-buying 3.5. Its buying an improvement.