50 articles

I need about 50 articles to be written of about 400 words each. Each article will have some health statements that will need to have corresponding scientific reference. I am looking for an exceptional quality writer that will prepare those articles so that they can be used to write an eBook. The contents need to be EDITED by a different person that writes so that it is ready to publish. Each paragraphed statement in the article would contain 1 - a few sentences. Needs to be very concise and to the point. In order to test the quality I would like to start with initial small number of articles and see if we can proceed. There will be a lot more jobs coming soon if quality is outstanding. An example of what I want to do is: Product 1 1. Statement1 consisting of 1 or a few sentences. Needs to correspond to scientific reference. List of references will be on the bottom of the Product 1 article. 2. Statement2 etc. 3. Statement3 etc. etc. References: 1. Smith J, Johnson W. Scientific research title. Year of publication. Source. 2. etc 3. etc Please provide me with the method of pricing and method of payment. How many articles of 400 words can you write for $30 as a test ? How much do you charge per 100 words, do words in references count, how long does it take for 10 articles of 400 words to be written etc. I will email you individually the details of details after I get bits with responses to the above questions. Thanks