1C Bitrix conclusion wholesale price in the template

In the item card displays the price of the goods or the price of a particular torgovogo offers

Also see the wholesale price, is for information only, in the pattern prescribed formula: wholesale price = price – 10%
But the problem is that trade different proposals have different costs and when you select the properties of the SKU-based price changes, but not wholesale changes. You need to improve.

To specify the value, make today