@aldermine You are correct. I bought a pre-amp from one of the advertisers here and on AudioMart. We had various phone calls about my system and what I was looking for. I was in the middle of an out of state family trip and our calls were after hours to accomodate my schedule.
The exchange of information gave me a sense of confidence and I bought the pre over the phone. It came with a note to call him when i received and was ready to install it, which I did. It was a great experience and a fantastic purchase.