When it comes to marketing on the Internet you usually end up with what you pay for. Quality and uniqueness are so important that it can either help your promotion or kill it. Nobody will take you serious if your grammar sucks. Take a good look at the comments here for example. Many of the people who say they can write obviously have trouble with their grammar. You will end up doing things over unless this is not a major concern for you. Honestly, do you really think you can get a good writer to this for you at .60 for 100 words? Don't be fooled by most offers. They often scrape for comments and use a spinner. Nothing original about that!
I have a Masters Degree and am a fair writer. I am not busy right now and could easily do this for you. And, I have lots of experience using guns! But I would never work for the amount of money you are offering.
If you want quality and honest writing pm me.
Frank