Depending on the size, a non-profit can get the services for free (typically suited for smaller size), or get a discounted upgrade (typically suited for larger size). This is big news, for sure!
http://betanews.com/2013/09/10/microsoft-donates-office-365-to-nonprofits-surface-team-celebrates/
https://www.microsoft.com/about/corporatecitizenship/en-us/office365-for-nonprofits/