Magento system, offers users an excellent tool for creating rules of special prices for multiply products at the same time. We have 2 types of rules: the first refers to a catalog of products, while the other to the contents of customers shopping cart. Let's look little bit closer at this first one.
In this example, we'll create a rule of reducing 50% of the price of each product in a specific category in our catalog.
Go to Promotions -> Catalog Price Rules -> Add New Rule
At the beginning we give the name of the rule, then we mark stores to take effect in (obviously, if we have more than 1) and select group of clients. Remember to include the start date and end date of promotion period, You can also enter a From/To Time to be more specific.
On the Conditions Tab, set a condition to define the category of products: if the product is equal category id 44 (Sacs enfants) then...
..then perform the action: apply a percentage discount of the original price by 50 (50%).
Accept a new rule by click on "Save & Apply"
From now on, prices of all products from category 'Sacs enfants' ( category_id = 44) will be reduced by 50%. Products will display the original price (crossed out) and promotion one (as a rule).
Please note, prices usually refer to the standard price of the product. So if the product is set to individual special price it will be superior, depending on how we set the condition in price rule.
Enjoy your sales!:)