I picked it up - that is, the Kindle version for 10 bucks. To begin with, it is absolutely DAW neutral. In fact, it doesn't get much into techniques (like how to optimally use a compressor, for example). It's more about attitude, organization and efficient work habits. I don't know how many pages the printed book is, but at 30 bucks, it seems a bit pricey. I got about 20% of the way through the ebook in just about an hour, so it's not all that long. So far, I would not hesitate to recommend it for a ten buck investment.
I expect I'll be writing a full review for the July issue of SoundBytes. In the meantime, the worst that can happen if you buy the ebook is that you're only be out ten dollars. I believe they have a few chapters accessible for free on-line to help anyone make up their mind.