I have been able to help out a few dogs by getting a few extras of some models in the past. Others have helped me in the same manner. In some cases it cost me a little more, in some cases not. It's a free and willing exchange either way. I'm not a greedy man, but I see no wrong doing by those who do make a little. My internet was down during this offering, and a fellow dog made a purchase for me. As it turned out, they were still available today when my service was restored, so I ordered another one. Sue me!