Yeah I've bought all my Phantoms used from them (include P3P) All but one were barely used and in excellent condition. All the accessories I bought arrived in one day free shipping (I live 20 miles from their supercenter but even Newegg 10 miles away can't get it right).B&H?
They are an authorized DJI shop so they can do fixes but I've never contacted them about that so I have no comment.