SEO Content Writer For Ecommerce Store

I am looking for 2 people to work for us on a freelance basis - as and when needed.

YOU MUST HAVE IMPECCABLE WRITTEN ENGLISH

The parameters for the jobs are as follows.

We would like to increase traffic to our eCommerce store in the United States, by rewriting our product descriptions and producing keyword orientated content which utilises "low hanging fruit" search terms.

Content must be written to use a number of main search terms and supporting term
I would like you to write product descriptions and articles for our site ---------- words.
Content must be unique and valuable to the reader and not copied
Content must well structured and thought out
You must not use any practices considered "black or grey hat" such as keyword stuffing
H tags must be used correctly
All content, once paid for by us, becomes the intellectual property of our firm.

You should be a good communicator and able to work to deadlines.

Please reply to this post with a thought on how much you feel is a reasonable fee per item, or per month (I will consider a few months work if you are really good with the chance to extend way into the future)
Indicate how much you can produce in any given day, week and month
Please tell me why you are the person for the job, any experience you have and any notable achievements in this area.

I look forward to hearing from you.