Content of writing of around approx 500 words for an eBay description

Hi,
I am a new seller on eBay wanting to sell protein and gym supplies.
I have a new batch of Whey Protein (of a different variety of flavours) that I require content writing for.
It only needs to be quite brief (approx 500 words) with punchy information describing the contents, the science behind the protein, how to consume it and all the benefits.

Please do get in touch if you think you are able to not only cover all of the above but can also write to sell!

For any questions please do get in touch - I can give all relevant details to interested parties.

Thanks
Del