I know it's s pricey but when you consider it's 488 color pages it's really not that bad of a deal. Hell i bought a hardcover version of the shining by stephen king recently and that was 40 bucks and is obviously not a color book.
it's worth what ever someone is prepared to pay for it. It's a large book with many more pages than the average tutorial guide book. It's got work of the highest order in it, but if it never gets used then it's a waste of money. I'm very pleased with it so far. Just ordering some models to use to test the tutorials on.