As we walked into the garage sale on a recent Saturday morning the airplane models and military books were piled high on tables. When we left in the early afternoon, the tables were nearly empty of books and the stacks of models no longer towered.

I was helping out my wife buy stuff for her resale business. Most of the other customers were members of model clubs from around the Denver area. Throughout the morning I chatted with them and watched as they interacted with the stuff and other buyers. They never got into battles over things but were sometimes disappointed when a certain model was already taken that they