There isn't a commercial version of Aurelia. However, you can purchase commercial support or enterprise support for the open source Aurelia, if you want or need it. We can discuss your company's needs and put something together for you. If you are interested, just email support at durandal dot io
We are planning some commercial addons such as Aurelia Interface and Aurelia Business components. You can read up on them on our official blog: blog.durandal.io. There's some discussion of those here as well in other answers.