I was like you, but man $2,000 no thanks. This saved my budget and time https://github.com/glonlas/Stable-Diffusion-Apple-Silicon-M1...

Thanks for this tutorial, I had errors and spent time to fix them and I found this script that install LStein project on M1: https://github.com/glonlas/Stable-Diffusion-Apple-Silicon-M1...

On my side this helped me to make it works. I ran it and it was installed.