Vera Caspary wrote thrillers - but not like any other author of her time, male or female. Her specialty was a specific type that she pioneered - the psycho thriller.
When I do a workshop, there is always at least one author who comes up afterward and asks if I'll take a look at his or her book and consider blurbing it. For some reason, I can turn someone down in e-mail, but when he or she is looking me in the eye, I cave.
One of the biggest differences between you and a traditionally published author is that a self-pubbed author is responsible for everything. Not just writing the book - but cover design, editing, producing, distribution, and publicity as well.
There's almost no author alive who isn't weathering the tumultuous changes in the publishing industry.
Buy other authors' books when you go to their events. Even if you aren't going to read it. Even if you are going to give it away. Even if you aren't interested. Not just for the author but for the bookstore. It's karma and just plain good manners.