PCWorld: How to Save on Microsoft Business Software
“Many small businesses pay too much for Windows, Office, and other Microsoft products. They buy software off retail shelves or online, one-at-a-time, and miss significant discounts that are available to almost every company. If your company uses more than four Microsoft products, such as Project or Visio, there is a discount program available. You just have to know where to look.
How much can you save? Up to 50 percent in one current promotion, but more commonly 5 to 25 percent, depending on the product.”