Harry (Florida) , May 24, 2007; 03:23 p.m.
eBay is usually a good source for prices for equipment like this. As well made as the Prado is, its older illumination system is not very efficient. You could ask for $50 and take $25 or more than that in trade? You could probably net more by selling the slide changer and lens separately and tossing the housing itself.