I sold a colony to a fella last June. I took the queen from one of my best colonies with three frames of brood and a frame each of pollen and honey. I put this in a ten frame deep with five more frames of foundation. I felt like I may have charged him a little much ($250?) but he seemed satisfied with the deal. Anyway he stopped by today. He didn't want another colony but wanted some equipment (a complete deep for $100) to catch the swarm which emerged from the nuc I sold him last year. I was glad he stopped by because I wanted to get in touch with him because I'd like to raise some queens from that one and I have been kicking myself in the rearend ever since I let her go. However, I am glad that I did give him a good one because otherwise he may not have come back wanting to do more business. Not only did I gain someone who wants to do business with me now but I also have access to graft from that queen, provided he got back in time to catch the swarm before it moves on. It feels good when someone comes back to you because you did the right the first time.