I saw a motorized Beseler 4x5 enlarger with a Beseler color head and a three-lens turret, along with a bunch of random gear (but no lenses) in a Goodwill store about a year ago for US $250. I think such a price is the maximum for this lot, since many people are literally throwing away, or better, giving away, similar equipment. Old chemistry, film, and paper hasn't got much resale value unless it's something really special, in my humble opinion.