It really depends on the period they use to calculate it. My book was very briefly the #1 programming book on Amazon[1], which is, I think, a decent-sized category. I don&#x27;t know the exact numbers, but I probably sold a few hundred copies that day. But, more importantly, I think I had a narrow spike of a lot of sales in a couple of hours right when the book first launched.<p>[1]: <a href="http:&#x2F;&#x2F;journal.stuffwithstuff.com&#x2F;2014&#x2F;11&#x2F;20&#x2F;how-my-book-launch-went&#x2F;" rel="nofollow">http:&#x2F;&#x2F;journal.stuffwithstuff.com&#x2F;2014&#x2F;11&#x2F;20&#x2F;how-my-book-lau...</a>