What do retailers do with returns? I know some put things returned on the mark downs. Do on line stores do the same thing? Do you think a lot of the sale merchandise are things that have been returned?

After reading the post about returning the stretched shoes that did not stretch enough, I am not even considering getting shoes that are marked down, ever again. maybe this is why some shoes fall off my feet by the second or third wearing..Maybe someone already did some previous stretching so that my wearing them a couple of times stretched them beyond my limit.