People trust the degrees after your name and the clinical experience.
Hallelulah Acres programs are great for personal education but would be hard to make money using this system as you don't have a complete system of health: diagnosis, referral, knowledge of multiple remedies.
A formal education, as much as people like to knock it here, can be an invaluable framework for understanding things at a deeper level.
It is quite easy to make money in natural healing but you have to submit yourself to the rigors of a medical education first. (and there are many of these!)
Check out naturalhealers.com for a list of all licensced professions available.
The people that have no degree and no license that make money are very rare indeed.