Yes I envision a lot of learning is required. Like years probably.

The last thing I want to do is to fork out $4k and fail it because there won't be any refunds.

I have contacted the company and asked if they have component packages that can be purchased separately. 

Because the course has a high risk profile (aka a high chance of failure) I need to get some benefit from the time and cost, so should I fail the ultimate exam, then I haven't wasted all that time and money. 

Exam failure is just one risk, the other risk for me is will I have the skill to be able to learn and understand the material. I don't want to spend $4K finding that out. I don't mind  putting in some time and resources in the beginning to know if I am even capable of achieving the outcome.

It looks like they are bringing out a subscription around the learning of basic fundamentals. That would be quite good, depending on costs of course.