Maybe you guys are doing it already right now, but let's say you bought an actual physical book of your favorite setting and another line gets announced and you're more interested in the splat books than the core book. Why not just buy the PDF for the small differences of the core book and refer to your own core book for the basic rules or something? After that you can just buy the splatbooks. It's cheaper, it's not the same as a physical book when it comes to reading but it's cheaper nonetheless and it's just for some minor things.
DH2.0 is currently sold for $29.95 at DriveThruRPG instead of the normal $59.95 price right now.
Edited by Gridash