Commerce Cart Message

This module allows you to configure a message via Rules to be displayed on the cart or checkout pages.

For example, if you're using a product pricing rule which runs on all line items -- you cannot use the "Show message on site" rule because:
a) The message will be displayed on all pages if you have the Commerce cart enabled as a block
b) The message will persist after a refresh, which may not be valid if the user has updated their cart.

To use:
1) Install the module
2) Create a rule which uses the action Show message on shopping cart
3) Decide where you want the message to display by adding a Commerce order: Cart message block to your views: commerce_cart_form, and/or commerce_cart_summary.
4) Optionally: theme the message by copying commerce-cartmessage.tpl.php to your theme folder.