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.
Camping. Whether it’s at a campsite, where a family might spend tens or hundreds of thousands on an RV and all the gadgets in it, or deep in the woods, where an ultralight backpacker might spend thousands of dollars upgrading perfectly good gear they already had because it could save a few ounces.
To be clear, camping is actually really accessible, and few people go THAT extreme with it. Just… no matter what budget you set for it, there are ways to spend it. :P