Selling working laptops without power supplies

You are taking about the charger NOT the power supply...BIG difference. You cpuld pick up a charger for the model number of the laptop off ebay or amazon pretty cheaply alot of times. Look at what they sell for with and without the charger...eapecially if a pretty decent spec one, theb see if worth it. Many times people will pay alot more if they dont have to hunt parts. If expensive just sell without charger and let the end user pay the price for the charger as they still might be gettibg a deal but dont have to wprry about profit margins like you do.