25B [Definition of fundamental breach: substantial deprivation of expectation, etc.];

50A [Buyer's right to reduce price for non-conforming goods];

73A1 [Avoidance in installment contracts (fundamental breach with respect to installment): declaration of avoidance with respect to defective installment];

74A1 [General rules for measuring damages (loss suffered as consequence of breach): includes loss of profit];

78A [Interest on receiving price or any other sum in arrears];

80A [Failure of performance caused by other party (party causing non-performance): loss of rights]