Woodworking planes.
You can go to Home Depot and get a plane for $15-20, and it will - mostly - cut wood. Spend $50-60 and get a decent name brand tool that gives a lot less grief. Spend $500 and get a Lie Nielsen that’s just on another level.
Here’s the thing, though: you have to be pretty competent to appreciate the difference between the $50 and $500 tools; and if you know what you’re doing, you can easily tune the $15 so it works almost as well as the $500. Buy cheap to get started; upgrade if it turns out you stick with the hobby. I’ll never know if I could have learned easier/faster starting with a $50 plane, but my guess is that I’d still have been gouging the shit out of everything.
The setup thing is no joke. I made a sub $200 mandolin play well out of its league with just some sandpaper to lower the nut height. I still got the nicer one but for the time inbetween it was great. Now the friend I bought it from for $50 has it on loan since she can actually physically play it now with the lower string height.
I’ve learned that the ROI on most expensive stuff just isn’t really there unless you’re deep into it and want to treat yourself or you’re a professional(which is kinda the same but I’ll keep it separate). The caveat of course is that you have to start at a semi-reasonable place like you mentioned.
I don’t know why we want to believe that the high-end stuff is made with fairy dust and that we’re not capable of these things with just a bit of effort and trust in ourselves.