Final answer:
The rule for a buyer's revocation permits the buyer to revoke acceptance if they find a non-conformity that substantially impairs the value and they were led to believe it would be cured,
while the exception prevents revocation if it would cause undue hardship for the seller or the buyer should have noticed the non-conformity earlier.
Step-by-step explanation:
The rule for a buyer's revocation of acceptance of goods is that the buyer can revoke their acceptance of goods if they find a non-conformity that substantially impairs the value of the goods, and they accepted the goods on the reasonable assumption that the non-conformity would be cured but it has not been,
or they accepted the goods because of the seller's assurances, or they were unaware of the non-conformity due to its difficulty to discover before acceptance.
The exception to this rule occurs if the buyer's revocation is unjust because it would result in an undue hardship for the seller that could not be remedied by the seller's assurance of cure, or the non-conformity was something the buyer should have discovered before acceptance.
The rule for a buyer's revocation permits the buyer to revoke acceptance if they find a non-conformity that substantially impairs the value and they were led to believe it would be cured,
while the exception prevents revocation if it would cause undue hardship for the seller or the buyer should have noticed the non-conformity earlier.