I am an author of 4 books though only 3 will be availble to buy, working on re-publishing one of them now, first 2 books published through publish america ( wouldn't reconmend them unless your doing it just to get published. I went with them because it was free, and thought it be cool to be published, not realizing the lack of promoting they would be doing, having to spend so much on my own book not to mention 7 year contracts. Why I left them to have my 3rd Rainbow's Hidden Treasures be published with Tate Publishing, good publisher if you got the money to invest, and if you sell 5000 will get the investment back only 4900 for me to go ;) plus they spend over $12,000 on you in advertising and other things. The last book After God's Own Heart I used createspace.com which is free, just have to do all the work, luckley for me have a good friend to help me out. So anyway those are my publishing experences and here is my author page.
http://www.amazon.com/Kyle-Walker/e/B00GP626CS/ref=sr_tc_2_0?qid=1387418581&sr=1-2-ent