Customer / Item Sales - show sales amount, and profit for each sold item to each Customer.
Try creating "Inventory Analysis Report" - it is similar to Inge's mentioned Financial Reporting, where You define Rows and Columns - You can create needed rows and then provide the filter how values are calculated - it can be Item or Item Group with a filter to global dimension. In columns You can set to show value beginning balance Balance at end date, net change, year to date and others and for this period show Quantity, Sales Amount, Cost amount, Unit Price, Unit cost and others.