I fully agree with DMakeev-Ohm.
I do not advise to use the standard import data feature. For this, first you will need to configure the CSV to add required column (character code, currency, etc.), and each time you upgrade you will have to do the same, and long operation settings, which will take a very long time. In addition, the import in Bitrix does not work with large files.
About automation at all sure.
But most importantly it is for one time entry of data.
But in this respect you are not alone, and the decision on the Internet just to find, here's an example of a very good and cheap import module PriceClassic.ru