Anything over 150 seats means you need to pay at token rates plus the $20/user. My day job is operational (no coding at all) and I'm spending ~$300 a month on a few chats with Claude/Cowork a day over the course of a month.
I hope your company is keeping the input/response pair in case they need to break free at some point.
$300 is my employer's monthly cap on Claude Enterprise. It lasts me at most a week of moderate use. I would much rather get Codex Pro and Claude Pro or Max, which would cost ≤ $200. For $300, one could also add Gemini Ultra to the mix so I could have all three review each other's code, etc.
Claude can be very good but enterprise pricing doesn't make sense to me.