Hello:
Provided that you have all necessary research materials, (i.e., bullet-pointed lists of topics you want covered per keyword,) I can do all ten of the articles you require for the given amount. If you would rather i did all of this research, I would do 5 of those articles (of your choice of keyword) for that amount.
Some clarification: "7" days is 7 business days. That is, I can confidently say that I can get the first drafts of these articles within five business days and set aside two days the following week for revisions should they be required. Please see the PM for a sample.
Thanks and Peace,
David