15 articles of 500 words needed

Hello freelancers, I have a writing project where I need 15 articles each 500 words. I intend to use these articles on my website and therefore, they should be as informative as possible. My budget for the 15 articles is $30 which mean that I will pay $2 per article. Please bid with samples from previous projects to help me choose the best contractor. In your bid, please tell me how many articles you can complete per day. The articles must be original and not copy paste from the internet. I own several blogs and this might result to a long term relation since I need regular update for my websites. Am looking forward to receiving your bids.