7.3 Price Adjustment Formula Seller shall complete the calculations required to calculate the adjusted Price as soon as possible after the CPI data for the relevant September becomes available and use commercially reasonable efforts to Notify Buyer of the adjusted Price by no later than forty-five (45) Days prior to the effective date of the adjusted Price. Seller’s Notice will include the CPI values utilized in its calculations. The Parties will sign the rele-vant additional addendum to this Agreement confirming the adjusted Price, with such addendum accompanying Seller’s Notice..