Hello Madeline.
I don’t believe the decision to pursue yoga teacher training, as you outline it, should be made from a fiscal perspective. I do realize the paradigm is a common one with higher education - what do I get, how much will I make, what will I do, what advancement opportunities are there, what is the income potential, etcetera.
It is this very paradigm that creates suffering for so many people.
I suggest that one who is evaluating a teacher training shift the thought process to one of “what can I offer”, “what do I have to give”, “how can I help others”, and “is this a thing that manifests a higher purpose for my spirit/soul/life”.
Some teachers make very little money at all. But they are the saving grace for many students as they are able to open themselves up and serve as a conduit through which yoga can pass. Others make a great deal of money while serving no one at all other than themselves, their financial planner, and their accountant.
I believe there are ways for yoga teachers to earn a reasonable living in harmony with their dharma (life’s purpose) but I do not think it is currently an easy thing to do and most do it in only one way - over scheduling themselves, teaching 20+ classes per week, and often burning out.
I do not teach full time but it is my deepest intention to open a yoga center and to provide methods with which the teaching staff can achieve this very thing mentioned above. Many teachers have other jobs in other fields. Some teachers have a two-person income as their spouse has a “regular” job. I know teachers who manage law firms, work in technology, are massage or physical therapists and so on.
Spend the money on the training if you are called to do so by yoga not by revenue. Otherwise it will be very challenging to find the joy necessary to convey yoga’s light to others. Keep your current job and begin teaching a couple of class each week - assuming that after your training you want to teach at all.