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.

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/

What am I missing: here it lists as SIL OFL [0]

[0] https://www.programmingfonts.org/#iosevka