Nah, they wanted a US phone number and stuff, and if you pay you need to give more information.
I only use Grok since they already had my email from signing up before I found Nostr, and I'm not giving them money either.
Also, it's not about how much money you spend, it's about how much money you keep, so those of us not spending money on ChatGPT will keep more money for longer 😎