When an hourly Virtual Machine is created, we will not charge the storage fee upfront. Suppose you deactivate the machine within the same billing period before it ends on the 1st of every month. In that case, the VM will disappear from your machine's list, and the system will add a prorated charge for the storage fee plus any applicable utilization.
For instance, an Air 50 GB ($5/mo.) VM is created on June 2nd and deactivated on June 15th. We will charge approximately $2.33 for storage in a 30-day calendar month. We don't charge the entire monthly fee when a VM is deactivated within the same billing period. You can find more information about our billing at this link.