Hey Alkoz,
I think you would only get rough field grade points at best from that ad. Bobthebaitfish mentioned Txdigger.com in his post. I've heard good things about them. Also, if you're looking to buy, I would look for dealers who are members of AACA. Most dealers should give you a 30 day review period to decide if the artifact is good or not. I would stay far away from magazine ads. This is just my opinion.
Good luck!
Brian