You can restrict customers from checking out of your web store until they have reached a minimum total sales amount. If you have multiple subsidiaries and use multiple currencies in your web store, you can set a minimum order amount for each currency that is marked online. Use the following steps.
To set a minimum order amount for web store sales:
1. Go to Commerce > Websites > Web Site List.
2. Click Edit next to a web site you want to edit.
3. On the Shopping tab, in the Minimum Order Amount field, enter the minimum amount the
customer must spend to submit an order in the web store. A customer attempting to check out
with less than this amount receives a warning and cannot continue with the order until more items
are added to the order.
Note: If you use the Multiple Currencies feature, minimum order amounts are set per
currency in the Currency list at the bottom of the Shopping subtab.
4. Click Save.