Microsoft has announced today lower prices for Office 365 offers. These lower prices are due to a high customer adoption and so a better efficiency to run Office 365, so Microsoft has decided to decrease Office 365 prices.
NOTE not all Office 365 offers are impacted; only the price of Enterprise plans are lowering by up 20%. The change will apply to new and renewing customers.
Below are the new Prices
Official Communication link : http://blogs.office.com/b/microsoft_office_365_blog/archive/2012/03/14/new-lower-prices-for-office-365.aspx
Office 365 for education : http://www.microsoft.com/liveatedu/learn-about-office-365.aspx?locale=en-US&country=US