Yep I' serious, OpenAI Codex OAuth for £20 a month.
It is fine for casual use, but it's probably not enough if you're using it heavily for stuff like coding.
I also use free Ollama models via an API key for less important tasks which my subagents perform like News Alerts or Price movements.
I got OpenClaw to setup a Discord server to have different subagents talk to me on different channels for specific tasks.