(1) Instead of rescinding the agreement, the buyer may, by declaration to the seller, abate the purchase price. The ground for exclusion under section 323 (5) sentence 2 does not apply.
(2) If the party of the buyer or the seller consists of more than one person, the abatement may be declared only by all or to all of them.
(3) In abating the purchase price, it is to be reduced in the ratio of the value that the defect-free thing would have had to its actual value at the time of conclusion of the contract. If required, the abatement is to be identified by way of an estimate.
(4) If the buyer has paid more than the abated purchase price, then the amount overpaid is to be reimbursed by the seller. Section 346 (1) and section 347 (1) apply accordingly.