I am looking at a used 2014 KIOTI DK40SE open cab with hydrostat transmission. The tractor has 334 hours on it. Comes equipped with a kl401 load and doesnt appear to be abused. Dealer is asking $18,500. Is this a good price? Trying to weigh purchasing a new DK4510 or a NX4510. I like the idea of no tier 4 on the older unit. Any help is greatly appreciated.