> I'm on the free tier, so let's hope they don't upgrade me and drain my already-drained account
If you're in the US, privacy.com. Used it for years, never had an issue. Create a card, use it on whatever, then limit the card to a dollar or something. Or just pause it. Worst case, cloudflare tries to charge you 100$ and emails you when the card declines.
This, except: if you're graduating high school, there's a chance you don't have a credit history, which might result in getting banned from due to failed identity verification.
Source: my own recent experience in registering before/after obtaining a credit score. privacy.com won't confirm if this was the cause.
If you're in the US, privacy.com. Used it for years, never had an issue. Create a card, use it on whatever, then limit the card to a dollar or something. Or just pause it. Worst case, cloudflare tries to charge you 100$ and emails you when the card declines.