Bitrix: How to add a product with an extra charge to the cart?

Question

1C-Bitrix

Made a markup on goods 10%. The catalog is displayed correctly everywhere. But when adding to the cart, the markup changes. What did I forget to do? How to add a product with a markup to the cart?

Answer 1

in short, the problem was in the wrong choice of the base price

Answer 2

how did you rate?
Is the product added to the cart with the base price?
The best option is to update the price of the product through the event mechanism when adding to the cart