definiens: means the total of : ( a ) the gross invoice price for Products sold by a party, less the reasonable and customary accrual -basis deductions from such gross amounts for : ( i ) normal and customary trade, cash and other discounts, allowanc es and credits ; ( ii ) credits or allowances actually granted for damaged goods, returns or rejections of Products, consistent with such party 's established policies, and government mandated retroactive price reductions ; and ( iii ) freight, postage, shipping, customs duties and insurance charges which are included in the gross invoice amount ; and ( b ) royalties paid to Third Parties and, in the case of TDCC, to Biosource, and, in the case of Biosource, to TDCC . In the case of a transfer of Products by : ( x ) Bios ource or one of its Affiliates to another Affiliate of Biosource ; or ( y ) TDCC, one of its Affiliates, DAS or a DAS Affiliate to another entity in this same group, Net Sales shall be determined based on the invoiced sales price for Products upon the initial transfer to a Third Party customer, less the deductions allowed under this Section . Every other commercial use or disposition of Products by Biosource, its Affiliates, TDCC, its Affiliates, DAS, or DAS Affiliates in barter or other non -monetary commercial transactions, but excluding any sampling of Products, shall be considered a sale of the Products at the weighted average Net Sales price for such Products during the preceding quarter in the same country