20 SEO articles - native german Writer

I am looking for a native german article writer. I need 20 articles with each 500 words. The main-topic is financial/insurance, but not to deep, so it not should be to difficult, more something like "all about" but anyway native german is required. I give you the topic, and a title + keyword where you should write something about. Each article needs to be unique (copyscape-checked), spell-checked and grammaticaly correct, delivered as .txt- or .doc-file. Please send me 1 example article where you have written. You bid for 20 article in german language with each 500 words, written in 2-4 weeks. I am looking for someone to work with in longer term.. Paymernt: GAF/Paypal