10 Articles on Self-Improvement needed

I´m looking for a skilled article-writer for an upcoming project. Pricerange should be around 3-4$ per article. Please state your per-article price and the time, you´ll need for delivery of 10 articles. I need 10 articles 300-400 words each about the "Self-Improvement"-Topic. All articles need to become my own property, so you can´t use them on other sites or for promotional purposes. ALL articles NEED to be ORIGINAL - checked with copyscape and others.