The reality is, from Aow to Instructor with all fees, courses and dive costs (assuming your 30 dives) is conservatively around $20,000 If you don't have your own kit add another $3000. And then yes the annual fees. That's just an OW Instructor. Go further up the ladder and add more money. Get into Tech divign and become a Tech instructor, then add lots more money
The reality is, the ROI on the spend getting to Instructor is Zero. Nada. None.
Post qualification yes it's possible to theoretically break even on your annual spend just teaching, but in practice you'dd need to teach a ton of courses and probably lose all the enjoyment
Most part time instructors do it for the enjoyment primarily and forget about the money they've spent getting there.
My expenses (very approximate):
OW, AOW, EFR, Rescue Diver total-- maybe $1,200.
DM course, including materials-maybe $800?
Equipment purchased (including tanks, weights)--much bought used--less that $2,000.
The membership and agency fees are annually. Don't know what they are for an instructor. For me, the two totaled about $300 (I only too insurance to assist-- to teach the DM - led courses add maybe $100.
Leaving out the annual fees, my expenses totaled about $4,000 to become a working assistant.
How much is the Instructor Course? 2,3,$4,000 at most. I don't think here it is as much as $4,000.
How does that come close to $20,000?
And don't forget, I'm talking Canadian Dollars with our expenses, with CAD= 75 cents U.S.
I could have left something out, admittedly I didn't keep exact records and you are way more experienced in this area than I.