Build an E Commerce Site

We would like a full e commerce site for our range of New Beauty and Aesthetics Machines. The site will be used to market and therefore have the ability to have social media elements included. At present we have 1 mian brand and 4 sub brands so will require at least 5 pages and the e commerce site. We have a finance option which will sit as part of the home page and an example of a site selling similar is here for you to view: www.dermatech-systems.com - we would like the site operational within 1 week