The Flexible Plan for Google Maps Engine Pro allows you to pay only for the service that you use during the month. You will be billed $5 per license on the last day of each month that you use the service. You can add or delete licenses at any time.
We will prorate the number of licenses for partial months of usage. So, for example, if you add a license on April 1 and delete it on April 15, we will charge you for only half a month of usage.