Ratliff Development Corporation purchases a tract of land in 2016 at a cost of $120,000 and subdivides the land into 30 building lots. The cost of subdividing is $6,000. In 2016, Ratliff installs roads and utilities at a cost of $36,000 and pays property taxes totaling $2,000 in 2016 and 2017. Interest paid on the loan used to purchase the land is $10,000 in 2016 and $6,000 in 2017. In 2017, Ratliff sells 10 lots for a total of $350,000. What is the corporation's gain or loss on the sale of the lots?