I’d like to thank you for posting this, as it prompted me to think about how much I’ve spent on my first 2 builds...
I just made a detailed list of what I spent to create build #2 and came up with $912.00 (I’ll share the list if you wish).
It’s a pretty custom build and I did have a couple of nice gifts that helped keep it under $1000- Namely a Tomas moped hub & urethane clear coat for the gas tank & fender.
But I think the real cost savings came from scrounging for inexpensive parts (example, the frame was a $10 flea market find), and then by doing the fabrication myself.
My first build is actually more detailed, but I did much more scrounging, and used less expensive componts over all (example no CVT).
I estimate the cost to be about the same, perhaps less.