Probably to prepare the arrival of the D80 digital SLR, Nikon started to send the price of the D50 down. People interested should be looking for under-275$ offers that are starting to appear on all price comparison search engines.
I suggest that the best location to look for them are the targetted ads appearing on this page and the different photo-related pages of my web site. I already saw several of them refering to the D50.