This module solved my problems, since the store is filled automatically by the link from the feed and the prices come from the purchase price. Thus, with the help of this module, I make a general margin and for wholesale buyers separately.
There was a conflict with the filtering module, since the filter module receives goods before the module has time to mark up.
The developers of the filter module corrected the code and everything worked, but the price filtering block cannot be enabled. But in principle, the tasks are solved. Thank you, and special thanks for the prompt replies!