There’s interview cake and leetcode, but I think people would pay $2k for a class that focuses on the questions and in person whiteboard practice.
They could collect information about the interviews at the major companies and then use those to create the program. For payment could also help candidates negotiate and then take a cut of the signing bonus.
If this isn’t part of lambda school already I think it should be.
I already work at a competitive tech company, but I’d sign up for this in a second to help me stay competitive for interviews.