The cost for each available software title is $9.75. You will need to enter credit card information to complete the transaction.
The site to purchase Microsoft operating system media is
Log in with your Amherst credentials and click on Start Shopping
You can purchase one copy for download of each version of operating system Microsoft Windows 8.1, Windows 8 or Windows 7. You can also purchase a DVD and or extended download rights if you wish, this is optional.
Do not lose your installation Key!
Enter a Product Key. Enter the product key that was supplied with your purchase. You do not have to create a Microsoft account to use the software.
Your software is ready to use.