How to transfer the price value to another price in Bitrix in the product catalog?

Question

1C-Bitrix

There is an online store on Bitrix. The product catalog is an infoblock. And each product is an element of this infoblock. There are about several thousand products on the site. When editing an infoblock element, the price field in its property values ​​is empty. However, when editing an infoblock element, there is a "Trade catalog" tab, which has a field like: base (retail) price, which has a numeric price value.
The question actually is how to transfer the value of prices from the trade catalog to the properties of the infoblock element. Massively.

Answer 1

Through api

Answer 2

Write a script that will enumerate all the products and write them into properties.
Set event tracking for price changes and keep the property value up to date.