definiens: shall mean that portion of the Net Sales that is attributable to Gen - Probe Products of the amount billed or invoiced on sales of any Trans ferred Products sold in or made in the territory, w ith no deduction for corporate taxes and/or franchise or c orporate income taxes, ( for any Transferred Product transferred for consideration other than cash, exce pt Gen - Probe Products transferred for research, cli nical trials, compassionate use programs or marketing samples, th e sales price shall be deemed to be the average pri ce at which identical Transferred Products were sold by I sis, its sublicensees, Collaborative Partners or it s Affiliates in such country during such Calendar Half Year in transactions ) less : ( a ) Customary trade, quantity or cash discounts and nonaffiliated brokers ' or agents ' commissions actu ally allowed and taken ; ( b ) Amounts repaid or credited by reason of rejecti ons, recalls or returns ; ( c ) Any freight or other transportation costs, insu rance charges, duties, tariffs and all sales and ex cise taxes and other governmental charges based directly on sales or turnover or delivery of material produced under this Agreement