Copywriting-Sales Letter-For Ebay products

I am seeking a killer sales letter that makes people have to have this sales package. The sales package is a combination of Ebay Ebooks to educate the beginner, give auction selling keywords, advise on where to find products to sell. A full list of products is given at this url [login to view URL] I would expect the winning bidder to be fimilar with these products in order to write an effective sales letter. The sales letter must offer a 30day money back guarantee. The retail price will be $39.95 reduced to $19.95. I would expect the sales letter to follow this format at this url [login to view URL] Of course it should sell the Ebay sales package. The last 6 items on this list should be advertised as "Bonus offer" You are allowed to surf the web for ideas but breaching another parties copyright is not allowed. Thank you