In 2017, Quapau Products introduced a new line of hot water heaters that carry a one-year warranty against manufacturer's defects. Based on industry experience, warranty costs were expected to approximate 5% of sales revenue. First-year sales of the heaters were $300,000. An evaluation of the company's claims experience in late 2018 indicated that actual claims were less than expected-4% of sales rather than 5%. Assuming sales of the heaters in 2018 were $350,000 and warranty expenditures in 2018 totaled $12,000, what is the 2018 warranty expense?