Offshore First Aid Course
There are several companies that offer remote medical help. The ones I''ve seen offer insurance-type assistance as well, if you need to be airlifted or go to a boondock hospital. Do a Google search for "Marine Medical" and a few companies will pop up.
For my $.02, I think $400 for 3 days of training sounds great. I sail with my kids and would consider it worthwhile if I only needed a small part of the training on a single event.