definiens: shall mean th e gross amount invoiced for sales of Licensed Product(s ) made by P RI or its Affiliates to independent third parties, reduced by the following to the extent that they are properly allocable to the quantity of Licensed Prod uct(s ) so sold : all trade, quantity and cash discounts allowed ; credits or all owances actually granted on account of rejections ; returns, billing errors and retroactive price reductions ( including, without limitation, shelf stock adjustm ents ) ; credits, rebates, chargeback rebates, fees, reimbursements or similar payments granted or given to wholesalers and other distributors, buying groups, health care insurance carriers, governmental agencies and other instituti ons in respect of the purchase price ; freight, transportation, insurance or other delivery charges ; and all taxes ( except income taxes ), tariffs, dutie s and other similar governmental charges paid by the seller on sales of the Licensed Product(s ) and not reimbursed by the purchaser . sha ll mean ( i ) with respect to Product A, the difference between Net Sales for any amount of Product A and the price paid to SANO pursuant to Section 7.2 hereof w ith a good faith effort by SANO to reduce costs and ( ii ) with respect to Produ ct B, the difference between Net Sales for any amount of Product B and the lesse r of ( a ) the price paid to SANO pursuant to Section 7.2 hereof with a good fai th effort by SANO to reduce the costs thereof or ( b ) [ * * * * ] per transdermal pat ch