I would never recommend the PDF file version of something like AP timetables. People seem to think that it they purchase a PDF that they can do with it what they want...including making numerous electronic copies for friends, etc. All it takes is ONE person to post the PDF online somewhere and all future sales go in the trash.

People are far less likely to run off copies of a hard item like the timetables and as far as I know, printing them up isn't the main problem David has, its time or lack of it.