Are you familiar with, and have access to, InDesign?
If so, you could maybe import the PDF page by page into Photoshop, save each page as a JPG, then remake the book in InDesign.
Then from InDesign you would then be able to apply page transitions, and export as an SWF. You'd have animated page flips, and could even use "interactive page curl" which would allow the user to click the corners of the pages to flip them. Pretty cool stuff.
As far as pricing goes, that's up to you. You could probably get away with charging a couple hundred.