I have seen this place too and see they have a lot of high end cars, the area of Brum is not the best and being from Birmingham myself, personally I wouldnt, however, as already mentioned if you have done all the checks etc and the car comes up ok, there is no difference from any other dealer, only issue would be aftercare really, depends if its that important to you and if you have any issues would they be willing to accomodate?