Like others have said, nothing spectacular about his confo, but nothing terrible either. Just a pretty good example of an average horse that looks like he'd be a good working horse.
I don't like it that I can't really see his legs/feet well due to the weeds, but I'm going on faith that they are about like the rest of him...average.
Personally, I probably wouldn't pay that much for him, but whether you do or not greatly depends on how he fits you. If his training and temperament is exactly what you're looking for (and he's sound and healthy), then he'd be worth it, IMHO, regardless of whether he's grade or registered.