Most major US and international credit cards are accepted. All payments are handled by Stripe.
You can switch your plan at any time. Your API token does not need to be changed when switching to another plan.
I have an open-source plan available which mirrors the free plan but with a higher call limit. If you are the creator or maintainer of a project currently using AVWX, email me with a link to your project repo.
If you need more than what the Enterprise plan provides, email me so we can make a custom plan that fits your specific use-case.