Sale price not showing in cart page I have added a product in commerce. Each products have a price and sale price. In product listing page the price is cutout and sale price is displayed. When a product is added to the cart, sale price is not calculated in checkout. Instead original price is calculated. Since i'm new in drupal, I have no idea to solve this problem.
Could you change the field labels and make the field used for the price calculation the actual sale price field? The other one you could possibly call something like "original price" or so. 

If this isn't feasible and you're on Drupal 8, it sounds like you want to implement a custom price resolver.