A customer has 3 subsidiaries, sharing the same inventory items. They all have different currencies. They want to get control of their estimated gross margins on sales orders. The average cost is not correct to use for GM-calculation since it doesn't cover all costs (landed cost is not used due to other problems). One could use item defined cost on the item as the basis for GM-calculation, but there is only one item defined cost-field on the item, meaning it will only be correct to use that for one of the subisdiaries. Is there any other way to use the standard GM-functionality to work across subsidiaries without using average cost as the basis?