Or could one accidentally cut their own ranking in half by having both print and kindle sales going at once? (novelrank.com)
I was at # 165 in total paid kindle sales with The Geronimo Breach for a few giddy days in January at.99 as a cheapskate promotion. (russellblake.com)
With Kindles sales increasing four-fold on Black Friday this year, I've seen estimates of the 8 million Kindles currently in use jumping to 25 million after Christmas (Amazon doesn't release its numbers). (susankayequinn.com)