Note: Autodesk store prices are always for Standalone licenses. Network licenses are usually about $750 USD more. Also, when comparing Subscription, make sure you are comparing the same levels of Subscription.
Softimage versus Maya. Softimage is cheaper, but if you go for Subscription, it always includes Advanced Support (which costs extra). The store offers only the slightly cheaper Basic Support for Maya Subscription (but you can buy Advanced Support for Maya).