I'm in the process of teaching a group of newbies and one of the things I wanted them to learn is to not take everything and try to sell it. So, they still search for magic items and other goodies, but I let them know when some piece of mundane equipment looks especially valuable. Then, they take that and I allow them to sell it for about 75% or so. If I do it correctly, it should even out to about the same and less accounting for all concerned.