When the monthly quota is exceeded, all the requests are declined. There will be no additional charges or unwanted billing surprises.
When 75% and 90% of the monthly allowance is spent, notifications are sent.
Upgrading the plan takes a couple of minutes, and if or when the monthly traffic goes down, it is possible to downgrade.
See our plans at the Subscription plans page.
Note: The monthly quota is different from the rate limits.