Article Writing (15 articles, 400-500 words)

I need help writing 15 articles urgently. Below are the requirements: 1. All articles are on similar topics, only different keywords. All articles still needs to be unique. 2. There should not be any grammatical or spelling error. 3. Words per article: 300-500 words. 5 articles should be of 300 words, another 5 of 400 words and rest 5 of 500 words. 4. I will give 3 words and all those 3 words should present in article content other than primary keyword. Basically I will submit these to blog network. In each article I can create 3 links. So, all 3 words should present in article. 5. Work is urgent and I need it within 2-5 working days. Please bid if you can complete it within the time. It is better for me if you can send me fast because I need lot of articles. 6. Payment will be done only after complete job delivery. Please note: My budget is $0.50-$0.60 for 100 words. More articles coming up, but lets start by bidding on the first 15 articles. I would look forward to do a regular business with the winner. Thanks!