Should coffee cost more than a book?

I saw this on an author’s page and had to share.
Four of my books are FREE and the most the others cost is $2.99.
Please help us struggling indies, and read one of our books over a coffee.

Amazon: http://amzn.to/1D3exza
Smashwords: https://bit.ly/1QSFwmz
iBooks: https://apple.co/2uNmJrK

coffee v book