It seems to me the prices on used DW's has doubled in the past 4-5 years. The complete 15-2 pistol pac I bought for $400 is going for north of 1 grand now. I've sold two of my 15-2's, kept the pistol pac and have a Super Mag I'm keeping for a burial shroud. Check out the DW forum.
http://www.danwessonforum.com/