Auto Build Items when dealing with foreign currency

We are wanting to auto build an item. However the items we would be using to build are purchased both here in Australia and overseas. This will create an issue with an out of balance each time we auto build due to the exchange rate.

My other options were to create a sales template with all items automatically listed, which I don't think you can do in AccountRight?

Or, do a recurring sales transaction. But you can't do a recurring sales transaction unless it is always for the same customer and we would be selling this to various customers.

Can anyone offer me a work around for this issue? Happy for any suggestions.