by robm » Sun Apr 25, 2010 7:02 am
Did you verify that the checkbox "On Sale Toggle" is checked under:
Products -> (select product) -> Edit Product Layout
From the help docs:
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Leave this box checked to put your product on sale, or uncheck the box to sell the product for the regular price. If this box is checked, the sale price will be displayed on Store Pages and More Info Pages, and used to calculate shopping cart totals. With this box unchecked, the sale price will not be displayed or used, regardless of the contents of the On Sale Price field.
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Rob