Clarification: Part of the reason that I think its so cheap is that I'm subtracting from it all the books that I will get to use but won't have to buy because everything in them that I care about is available in the rules compendium.
Not renting a book, renting all books ever. And also getting the magazines.So you are talking about the compendium? So renting a book for $60 per year for the compendium is OK for you with potential inaccessibility to the materials (server downtime, no internet access, etc), missing material from said rented book, inability to print in any cost effective manner.
Right, that's why they cost more.Even the PDF versions of the books will have the functionality and then some over the compendium