The best course by NVidia looks like "Fundamentals of Accelerated Computing with CUDA C/C++" which I think used to be publicly available, but is now offered "By invitation only"
It appears as though that course has been replaced with "Getting Started with Accelerated Computing in CUDA C/C++" which is $90 as a self-paced online class with a certificate at the end.
The course you are referring to is instructor-led and costs $10,000 to have them set up, for up to 20 people.
