As I work away on 3D printing I am looking at regulation literature. Ayres and Braithwaite’s Responsive Regulation is available on Amazon for 34.99 for Kindle or you can rent it starting at $14.73 (no kidding, it is that precise). There is a calendar and you can select the length of the rental (3 months comes out to $22.30 and to Amazon’s credit hover over a date and the price appears rather than having to click each date). On the one hand this offering seems rather nifty. Yet I wonder what arguments about market availability and fair use will be made with this sort of rental model for books in play. And this option brings us one step closer to perfect price discrimination. Would I see the same rental price as someone else? Would I need some research assistant to rent for me? Would that person’s price model be forever altered based on some brief period of working for a professor? What about librarians who rent books for work (I suppose work accounts would be differentiated but the overlap between interests may shift what that person sees on a personal account too). Perhaps Ayres and Braithwaite’s regulation pyramid is needed yet again.