I watched the video. It looked like they were trying to pick quite a few tractors that had been in collisions or fires. I've imported tractors from Japan since 1997. There is a big difference in the quality of tractor from different yards. My suppliers are very selective in the tractors they will offer to US customers. Other yards aren't as reputable & will try to sell junk as good tractors. You have to know who you are dealoing with. I'd bet most of the tractors pictured will go to Viet Nam, get a new paint job, have the hour meter turned bak to zero, & fixed enough to sell in the US as a "reconditioned" tractor. I've bought 30 year old tractors that look & run like an all most new tractor. The Japanese owner had taken good car of it & buying them used is a good alternative to a new tractor. As to parts availability, it does vary by model for both US & grey models. I haven't heard of a D1803. It might be a Suzue model.