It is spam. The website has no coupons. It claims it has, but they are not a penny less than the normal price.
They have 0 student coupons. The website is fishy in design.
It uses "Microsoft" without permission, and isn't part of Microsoft, nor follows the Trademark legal usage of the company name.
Stolen text from another website. Has typos and basic grammar mistakes, has no contact info of any kind nor support.
Coupons code links to "send.onenetworkdirect.net" which redirects you to Microsoft website. If you Google search the URL it's massively used in similar spam websites.