Dear Darius
Can you please elaborate your query with example. However I think Mixed costing can help you in this case.
In mixed costing you can create various procurement alternatives using production versions and create a mixing ratio. System will calculate standard cost for all prod versions and based on the mixing ratios system will calculate a weighted average price and update the material master. Please take care to decide the costing lot size as your setup time is highly different for different production alternative.
Regards
Rajneesh Saxena