Long term content creation service needed!

This is only a gateway to a much lager deal. I'm in search for 200+ articles each and every month. I pay upfront for all articles using the escrow service provided by GAF. *I will not take the business outside of GAF for security reason. Escrow is the best way to keep everyone safe. A new project will be made for every article pack needed. Article pack will be 10 to 50 articles at a time for a total of 200+ each and every month. The topics are different each and every time but each article pack will always only be on one topic. Content has to be 200% unique, English grammar and spelling perfect, easy to both read and understand and last but not least... has the potential to convert readers. If interested please state your case with a PM and offer your rates. Remember this is for a guaranteed 200+ articles each and every month so have that in mind when telling me your rates. Understand that this project is only used to find a content creation team/service that's able to work with me for a long term deal. Everything you need to say has to be done in a PM here before I pick a winner. This is only for content creation teams or services!