How can I add a sale ribbon to my Wix Online Store products?
To add a sale ribbon to your product: Click your Product Gallery to select it > from the pop-up menu, click Manage Store > click a product to open the Product Details window.
Under Optional Details, under Ribbon, enter your message (for example: Big Sale!) > click Save Product.
You can add the original price under Retail price and it will appear as crossed-out next to the product price.