Buying a gray market of any brand can be risky becasue parts are not readily available here in the States. I'm not sure how it is on the Kioti grays, but without being restricted by US laws, it's possible there may be very different parts on this tractor compared to the American counterpart. Also, you may have trouble getting anyone to work on it, so if you're not mechanical and know something about tractors, I'd think carefully before paying any amount for this tractor.
I know that parts are much more available these days for other makes of gray market tractor like Yanmar, Mitsubishi, Iseki etc., but Kioties are not that common in the gray market to have a lot of parts suppliers. American dealers would not necessarily have the parts if they differ from US bound Kioties. John