This past weekend, my book hit #4 on Amazon.com for Distance Learning books. Now, I should tell you that my book will never be an Amazon bestseller. Books on this or related topics don't do that. Being #4 equates with a ranking of about 30,000. and I am okay with that. As it happens, the highest it has ever been was in the 20,000s. I can't imagine that even the impending second edition will do better than that.
And again I am okay with that. The point was not to be #1 on Amazon. The point was to consistently sell books. #4 in Distance Learning does that.