Autodesk is currently offering a 3-year subscription for the price of 1 year when you trade in your existing 2005-2015 perpetual license. New customers (if you have no existing Autodesk software to “trade in”) can get a 5% or 10% discount towards a new desktop subscription license.
This offer is valid until April 22, 2016, and only in certain countries. For more details, see this web page.
