The price next to the cart icon in the header should be the sale price if the item is discounted.
Please take a look at our Trusted Pro demo and add a sale product to the cart. You will see the price in the header next to the cart icon will display the discounted price.
If this is not working correctly on your website, please can you let me know the URL of a discounted product on your site, and I’ll be able to take a look. Thanks in advance.