Successfully negotiated a deal with Alan on a tube tester. He was very informative, helpful and we made a quick agreement. He shipped promptly and gave some after-the-sale information, as well as showed concern for the quality of the shipping service I received. When he found that the shipping cost was less than estimated, he rebated the difference. I was surprised, since we had agreed on a set, all inclusive, price. All in all a very pleasant experience.