definiens: means the per - liter price at which Seller sells Blood Plasma to Purchaser, regardless of the Center from which the Blood Plasma is sourced, but does not include, and is separate from, the 2 NAT and 5 NAT testing fees set forth below . For calendar years 2012 and 2013, beginning as of the date set forth at the top of this Amendment, the Base Price shall be $ [ 164 ] per liter . For calendar year 2014, the Base Price shall be $ [ 165 ] . For calendar year 2015 and beyond, the Base Price shall increase or decrease based on then - current market conditions up to an increase or decrease of no greater than [ 3]% of the Base Price, and only ( i ) if agreed to by the Parties by [ October 31st ] of the prior calendar year ; and ( ii ) if consistent with the Parties ' reasonable evaluation of the market price for comparable blood plasma products as of such date