Price is valid for Companies that are part of the Microsoft HUP (Home Use Program). You must use your company email to qualify. I have also seen school & military emails work for this deal.
This is a digital download but you have the option of a back disc as well ($13).
Follow these simple steps:
Step 1. http://www.microsofthup.com/hupus/home.aspx?country_id=US&dialect_id=en-US&WT.mc_id=vc411&lookup
Step 2. Enter your work email address to check your company's eligibility.
Step 3. Microsoft will send you an Email with a buy link
Step 4. Buy the software and download and Enjoy!.
Allows you to Buy:
Office for Mac 2011 - $9.95
Microsoft Project Professional 2013 - $9.95
Microsoft Visio Professional 2013 - $9.95
Microsoft Office Professional Plus 2013 - $9.95