Article Writer Needed

Please let me have your bid for writing 15 original articles with 3 versions of each article, on the topic of vitamins and health supplements. I will provide the keywords. Articles should be approximately 500 words each and must be completed within 7 days. Fluent English with proper spelling and grammar is an absolute must, American English is preferred. You must know about keyword theming and how to work keyword or keyword phrases into articles in an informative and engaging fashion. All work must be 100% original at all times, no copy and paste and will be checked against Copyscape. This is a work-for-hire and I will own all rights to the work. Works are not to be re-used in any way for any reason. My budget is very low for this project, please bid accordingly. If all goes well, this will be a long term relationship and will require ongoing article writing on various topics.