Paper and shipping make up a pretty large percentage of the purchase price of the book.
I have a small amount of sketchy info and a large amount of suspicions about where all that free money ends up, and if you think the author gets a slice, I have a bridge I'd like to sell you. Great view of Brooklyn.

I stand corrected. Interesting. That puts a lot of the complaints I get from textbook publishers about their supply costs in a very different light.
So... if paper, shipping, and warehousing aren't the costs that are killing them, and personnel sure isn't, and I know for a fact customer service isn't even on the list... what costs are they complaining about?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.