The New Winchesters are in a league by themselves. I wouldn't compare the new Winchesters, to the Rem or Moss...hence the Price differ as well.
With that said, there is an abundance of Used Winchesters on the market..especially in this economy. As of recent years, Moss, Rem and Marlin, are all in the tank for reliability issues..not sure why they can't pull it together
Again, the used market, is flooded with great Winchesters at the moment.