Sales Letter

I am an internet marketer who sells informational DVDs over the internet. I have written a sales letter which needs tweaking. I would like the witting and general flow of my 26 page sales letter to be used to sell the informational DVDs. The sales letter has to be strong enough to sell my product and represent my business in a professional and productive way. I will be including a copy of my sales letter for creative, innovative and relevant amendments to be made. This sales letter is going to be attached to my web page. The layout of my sales letter is 1. Introduction about the business, 2. Reason why they need my product=Lifestyle and other benefits, 3. How to get life style= informational DVD products, 4. Bonus ,2 free DVDs, 5. Order to buy. I am not interested in hourly rates and would like reasonable one off quotes