Discounts are applied to all eligible items in your inventory unless you have specifically excluded them from being discounted.
You can advertise your discount with a site-wide message.
Click on the 'Electronic Coupons' link under the 'Commerce' heading in the Control Panel menu. Then, click 'Add a New Coupon.'
In the 'Coupon Information' section:
In the above example, any customer who has $50 or more worth of items in their shopping cart will automatically receive 20% off their total purchase, no code required. Customers will only be able to receive this discount once per email address.
In the 'Date Range of Coupon' section, you can choose 'No' and the discount will apply until you decide to deactivate it. Or, you can choose 'Yes' and specify a date range.
In the 'Coupon Calculation Method' section, specify the type and amount of discount.
In the 'Order Requirements' section, click the button next to 'Minimum Order Amount' and specify the amount.
In the 'Other Requirements' section, specify any exclusions, etc. if desired.
Then, click the 'Submit' button.
If you did not specify a date range, then the discount will take effect immediately. If you specified a date range, then the discount will take effect on that date.