I recall reading it cover to cover in 2011 (I had a lot of time sitting at a desk). I remember it was really good. Really did the job. Not just a reference book, but readable. I've got a hardback edition a few feet from me as I type this. It's good.

I don't know if it's thirty dollars good (although I see I paid thirty GBP for my hardback back in 2011), but it's good.