definiens: means the gross amounts invoiced or received by TTY or its Affiliates for their sales of Licensed Product to Third Parties in bona fide arm 's length transactions, less the following deductions, to the extent reasonable, customary, and documented : ( a ) normal and customary trade, cash and quantity discounts, allowances, and credits, ( b ) credits or allowances granted for damaged Licensed Products, returns, or rejections of Licensed Products and retroactive price reductions, ( c ) sales or similar taxes ( including duties or other governmental charges ) levied, absorbed or otherwise imposed on the sale of Licensed Products, when included in such billing, ( d ) freight, postage, shipping, customs duties, and insurance charges separately stated on the invoice and paid by the customer, ( e ) charge back payments, discounts, and rebates ( whether mandated or otherwise ) granted to trade customers, or local governments and their agencies, including without limitation, buying groups, and charge back payments, discounts and rebates ( whether mandated or otherwise ) charged by and Governmental Authority within the Territory, as well as the administrative costs relating thereto