Why are you trying to pay for it? Let procurement at your company figure it out. You wouldn’t pay for your IDE or any other tools, would you? The business should be paying for any tools they want me to use.
Have you ever tried getting a company to fund a developer tool? More often than not, it's like pulling teeth, even if the service in question is a paltry $20 a month.
I've learned to pay for things like OpenAI myself because it's not worth the hassle to get a company to pay for it (for the purpose of R&D).
If my org wouldn't pay for them, I would start looking for other jobs (unless your in an industry that can't use them like national security, etc), but I'm not going to let $30/mo stop me from using a tool that significantly improves my work just because of a middle manager.
Also, many programmers I know bring their own keyboards.. Chefs often bring their own knives, or mechanics with their own tool chests. Ownership of your own tools is powerful.