@Franco Robles: As it always seems, "it depends." This project is still very much work in progress, but .NET Core is getting a great deal of active investment by Microsoft and the community. Mono is much more mature, .NET Core is meant to be the "cloud-ready and cross-platform" future
@aptivadave: The cost is for the subsidized hardware, which is required for the course. I don't believe there's a course only (i.e. if you have the ward already) option, given this snip"Your registration will be confirmed once payment for this event has been made..."