I hate garage sales. The idea of lugging all your stuff out in front of your house so that complete strangers can attempt to steal it for cents on the dollar is painful. Nevertheless, this past weekend we had a garage sale. It was supposed to start at 7 a.m., but as we were pulling things out during the pre-dawn hours, people were already showing up to unapologetically scavenge. Then it began: They would ask, “How much?” I’d give them a price, and then they would ask, “Would you take [insert ridiculous price here]?” and expect to haggle until we met somewhere in the middle. As a professional negotiator, I loathe haggling, and the pain of it started to set in. That is, until I tapped into overlooked sources of power and leverage that ended these attempted haggles early.