: You can often find pre-owned physical copies or suites that include Revit 2015. However, these are frequently sold "untested" or without valid product keys for reactivation.
While you cannot buy a new license from Autodesk, you may find the software or related materials through third-party or secondary markets: : buy revit 2015
Retailers like Amazon and AbeBooks sell Revit 2015 training guides and textbooks (e.g., Revit Architecture 2015: No Experience Required ). Subscription & Legacy Access Autodesk Product Support Lifecycle : You can often find pre-owned physical copies