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.
Photography can start with your smart phone and get expensive in a hurry.
Digital SLRs begin at $2k and the lenses range from $400 to $3,500. The more you try and break into high end photography the more insane the costs are.
I probably dumped about $10k into cameras and realized I still wasn't that good at it. That's the painful thing. Realizing your skill doesn't match your fancy tech.
But there is a low entry point with this one. I bought a used Canon Powershot that has a 50x optical zoom. Only stores JPG. Can’t swap out the lense. But it was $200 and now I can zoom in on birds. Since it’s digital I don’t have to pay for film or prints.
That phenomenon is known as GAS, Gear Aqcuisition Syndrome. I sold all my shit and just have a 1" sensor compact now. I take a lot more pictures ironically.
The old adage I learned when I first got into photography (that I've only just started following) is that if you have $5000 to spend, spend $1000 on camera gear and $4000 on plane tickets. You'll end up with my better photos that way.