Kuznicki made a contract for the installation of a fire detection system by security safety corp. for $498. the contract was made one night and canceled at 9: 00 the next morning. security then claimed onethird of the purchase price from kuznicki by virtue of a provision in the contract that “in the event of cancellation of this agreement … the owner agrees to pay 33⅓ percent of the contract price, as liquidated damages.” was security safety entitled to recover the amount claimed? [security safety corp. v. kuznicki, 213 n. e.2d 866 (mass.)]