definiens: shall mean the gross amount received on sales by Solvay, its Affiliates and sublicensees of Royalty - Bearing Products in the Field, less the following : ( i ) trade, quantity, and cash discounts or rebates actually allowed, ( ii ) credits or allowances given for rejections or returns, ( iii ) freight, shipping, or other costs of transportation including insurance costs charged to a customer, and ( iv ) to the extent separately stated on purchase orders, invoices, or other documents of sale, any taxes ( e.g., excise tax, duties, VAT ) levied on the sale of a Royalty - Bearing Product which is paid by Solvay or its Affiliates or sublicensees . In any transfers of Royalty - Bearing Products between Solvay and an Affiliate, the Net Sales Price shall be calculated based on the first sale of the Royalty - Bearing Product to an independent third party . In the event that Solvay receives non - monetary consideration for any Royalty - Bearing Products, the Net Sales Price shall be calculated based on the average price charged by Solvay for such Royalty - Bearing Products during the preceding Royalty Period