Apparently on Twitter (I don't twit, so I only know about this from blogs), Brent Weeks got bent out of shape when a fan complained about the cost ($13) of his newest ebook.
I ran across
this article in The Digital Reader where they're making the case for why a $4 cup of coffee is a better deal than taking a $13 flier on a new-to-you author.
Now, I would never pay $4 for Starbucks - can't stand their coffee - but will willingly spend a couple dollars on Tim Horton's. And I gladly spent $15 on the eARC of the new Bujold book - but she's one of only a few authors I'm willing to do that for.
I think Nate Hoffelder makes a good case in the article.