Stability, simplicity, and accuracy. Very happy with the service. We have been using it for the last 5 years.
A US Reverse Geocoding subscription runs for the number of lookups or the period of time specified. For example, a monthly subscription of 5,000 lookups is suitable for either 5,000 lookups or one month, whichever comes first.
It renews at the same level as your current plan unless you have specified another plan or have turned the renewal off. Need to change plans? Change it on the subscriptions page.
Easy! After your purchase, select "Off" from the Auto-Renew Plan's dropdown list on the subscriptions page.
Yes, US Reverse Geocoding is a separate API. You can learn more about how to set it up here.