I try to be nice an tell people to call me then an if I still have it I will sell it to them but I can not hold it. Years of doing this an I have figured out that most never called back on Friday...If I where in the buyer's shoes and needed to wait till payday I think I would call the person and tell them if they haven't sold the thing in question then by such and such time on such and such time call me between x and x and see what happens, might luck out (and be less of a pain in the you know what)