I bought the book. The reason why: there was a clear lack of documentation on Riak at the time (still is). Your book is bar none one of the best sources of material for quickly getting up to speed on Riak. I read it cover to cover several times. Your writing style, ability to explain complex topics with simple prose, and fantastic executable code snippet examples also contributed to my decision to shell out the $29 - after I had read the sample chapter. Frankly, I probably would have had no issue paying more for it.

Now, if someone would just give the node riak driver some love....