malraux
First Post
The thing that I don't get about the pricing scheme is that the core books are already available on the net (albiet pirated copies). By setting the PDF price at the same as hardcover, there is no incentive for people to buy vs. steal them (aside from personal values).
Better bookmarking, incorporation of future errata, assurance that you've got the correct info (as IIRC the leaked MM was not the final copy), within book linking, etc.