Whats a hobby/craft that you wouldn't expect that has an incredibly high ceiling either monetarily or in sheer skill?
For example, I'm sure the average joe doesn't know just how expensive calligraphy pens can be, or how deep the rabbit hole goes on video game speedruns.
It turns out when you crash your $500 drone into a brick wall at 50mph, shit breaks and you get to spend more money if you want to fly it into another wall
This has both, really. People also have no idea how hard it is to pilot the quick, expensive little bastards. You're gonna spend a good chunk of time in the simulator before you can do anything with a real one. But hey, at least you can fix them, unlike DJI stuff where at the smallest little thing it's bricked.