This is referring to the Business plan I think (used to be called Teams or something). The problem is that there are two types of seats: normal and codex only.
Codex only gets billed at API prices. The normal seats are more like a normal subscription, but their codex limits were LESS than a $20 subscription last time I checked (it used to be the same or more but they reduced it when they introduced the codex only seats).
Codex only gets billed at API prices. The normal seats are more like a normal subscription, but their codex limits were LESS than a $20 subscription last time I checked (it used to be the same or more but they reduced it when they introduced the codex only seats).