This should convince someone.
haha...reading the comments after the article...all those people nitpicking the math...LOL! Missing the whole point, imho. Hopefully those who need to be convinced aren't doing the same thing.
I hope publishers do take note. About a year aog B&N had Joseph Finder's Vanished book for $0.99 or maybe $1.99. (This is the first Nick Heller book by Finder.) I bought it based on the cost. I liked it so much I pre-ordered the next book at full price.
Offering people a deal can many times get them to pay a little more for a new book by an author. Prior to this I had no clue who Joseph Finder was.