Then I read on and 'Selling more than 11,000 copies in the first year is great (okay, 8,000 if you don’t count the 3,000 I gave away)'. Wow, so actually you sold 8,000 and not 11,000. Apart from this one line the author repeats over and over again about selling 11,000. But he didn't be sold 8,000 but constantly misrepresents that number everywhere.
I don't know if his books are great or not but the hyped headline, inflated numbers and spammy feel of the blog post make me unwilling to try it.