I am getting close to buying my first detector. Actually, I may buy 2 new detectors. I have read numerous post about supporting the sponsors of this forum. Also, I read about people who buy from non sponsors. So this has prompted the following questions: Will the prices for a specific detector(s) vary from one dealer to another? What services before and after the purchase should one expect from a sponsor or non sponsor dealer? If a person buys 2 detectors from a dealer at the same time, is there ever a discount? What questions should I ask other than price and shipping method. Thanks!