[bmitc]

Who knows? Although, I actually bought this particular book off of Amazon.

In this case, after some research, I actually think this is related to the book sometimes being used as a textbook. I wouldn't really call it a textbook, as in the normal 30 editions type of textbooks, as it's just a really good book on its topic (and only the second edition, which is the latest). Apparently publishers want to funnel the used sale of such books through certain approved sellers? I imagine it's to keep the price artificially high and for the publisher to recover some of the money back themselves. Seems ridiculous, and it would be surprising if it's legal. It's basically a racket.