Yes. In the Zone page under the "Usage spent limit" column it is possible to limit your daily usage in 2 ways:
- Money spent(Dollars)
Once you reach your daily usage the Zone will automatically be suspended.
Note the Zone limit is calculated every 15 minutes and will not take effect immediately so a Zone might go over it's limit by 15 minutes of usage.
NOTE: When the load is high statistics calculation may have a delay. In order to manually update the usage-statistics in your Zone, open the Zone by clicking on its name, go to the Statistics table, and press the [recalc] button near the desired date. Wait until the red "Loading..." notification at the top of the screen will disappear, and refresh the page. The stats will then be up-to-date.