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Display the "on sale" icon on the product page and in the text found within the product listing. Check that box to show that your product is on sale, both on the product page and in the text on the product listing. An "On sale" icon will appear under the product. You can modify this logo by changing the following file: themes/default/img/onsale_en.gif
Cost price. This field is useful if the original price of the product changes simply because this is a combination.
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