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's not just money, it's not just skill that makes you a successful jumper.
It's a certain type of attitude and the ability to think when you've aimed yourself at a planet. Not everyone can do it. To be blunt, there is a large part of the population that shouldn't do it, because they have terrible decision making ability.
As far as money, I went through the student program in the mid 90's and it cost me about $1200, if I recall correctly. My first rig, used, was $4000. My second rig, new, was just over $8000. I have 4500 jumps most of which I paid ~ $20 each for. I don't want to do that math.