1. The Defendant: (a) KRW 8,895,079 for each of the Plaintiffs and 6% per annum from April 1, 2011 to September 3, 2016; and (b) for each of the Plaintiffs.

1. Judgment on the grounds of claim

A. Comprehensively taking account of the overall arguments in Gap evidence Nos. 1 through 8, the plaintiffs concluded a contract for sale in lots with the defendant on Jan. 9, 2008, 502 Dong-dong B apartment house No. 502,700 and 2903 on Jan. 9, 2008; 28,135,000 won for the intermediate payment; 337,620,000 won for the intermediate payment; 196,945,000 won for the remainder payment; 10% of the outstanding payment for the defendant's reasons attributable to the contract for sale in lots; 20% of the outstanding payment for the first 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 6th 10th 10th 2nd 3th 10th 6th 1st 2th 6th 6th 3th 6th 6th 2nd 3rd 2.