I would pass, especially at that price
Cribbing is not typical in TBs and it can be a severe problem. It doesn't get better and there is no such thing as a light cribber. My former business partner was a TB trainer at Philadelphia Park and I've seen many, many TBs in the barns - none that I can remember cribbed. I've owned a handful over the years and none of them cribbed either.
He has a roach back - another fault. As was said before, weight will mask it but it is an abnormality of the vertebrae.
Those two faults alone should be enough.