I've only sold four Amazon copies of Storm Chaser in September, and I *am* with a publisher. Small publishers have some advantages over self-publishing, but not many ... and I've been mostly on my own with promotion, although they just got me a pretty good review on a website. It's debateable whether the advantageous outweigh how much of a percentage they get. It's a complicated issue, traditional vs. self publishing, and in real life I don't like complicated.