Store Commander's integrated CSV import tool allows you to modify the price of a base product using combinations rapidly and in bulk.
If the base product uses a unique reference and each of its combination also uses a unique reference, different from the base product, then you can run a CSV import to modifiy the price of the base products of your catalog in just a few minutes.
Your CSV file will include the reference of the base products onto which the changes will be applied.
You can also run a CSV export using id_product / references to easily find the base products identifier.
You can then modify the information in the generated CSV file, and import the changes using the same CSV file.
Refer to the article below for detailed information.