I like him. One can see that he struggles with the left lead canter and is shorter of stride going left. But he is rythmic and doesn't have that "pronking" canter that a lot of arabs have. The rider did a nice job of staying light on his back and mouth and not stressing too much when he too the wrong lead going left.
How much to pay? Oh, that is so hard to say since it differs a lot for the area you live in. I gues around here, with the training he has, maybe 3 to 4 k$?