If you like Berkeley Mono but don't want to pay, here's an Iosevka configuration that attempts to mimic it as closely as possible. https://ahatem.github.io/IoskeleyMono/
It's better than mimicry, Ioskeley is superior to Berkeley Mono.
I first bought it for $75, then the updates came. I also got them when they came out, but I don't remember the price.
You can start with $75 package and work your way up if you feel like you need them.