You’re right, it’s 180% and I guess extra 90% for the 622, which makes Apple’s offering a bit ridiculous IMO (60% additional charge for double the price of the 622)
The “who is looking to be hired?” threads on HN has worked well for me.
To position and price yourself: I’d start with looking on UpWork or similar platforms in your geo and position yourself competitively (I checked on Malt, a french Upwork alternative).
I've recently moved to somewhere where it's much cheaper to live (Europe -> Latin America) and I'm creating products that scratch my own itch.
In a couple of months it's already paying for my expenses.
For now I'm fixing things that frustrate me while I work on my Mac (managing windows, tracking all my devices).
I have a long list of things I'd like to see fixed in products I use and products I'd like to see come to life, so I'm planning to spend this year working on that.