In the online accounting program mKsiegowa.pl, you can view created earlier bill of material in the module Manufacturing → Costed Bill Of Material Inquiry.
After selecting a product from the list, the program presents a full bill of material for that product. The list shows only those Items that are set for the Type - Product.
If you want to see which the products for a specific item, you can use the option Inventory Item When Used Inquiry.
The price for each item displayed in the column Unit Cost is calculated on the base of Standard Costs.