For what it's worth, the last 3 or 4 yrs at the local gun emporium 52's in nice shape, some w/box, extra mag etc, some w/out, price has been pretty consistent in the $800-$900 range. I think there was one real beauty w/box and all the trimmings that topped $1000. I haven't noticed a price differential between the different dashes.
4 yrs ago I picked up a nice 52-2 w/box, all paperwork, 1 mag, and a bbl weight for $850, prices seem to be about the same now.
Although they're not jumping off the shelves, they do seem to move eventually.
In this area Target Pistols don't seem to be in demand, same store usually has several mod 41's and a 1/2 dozen nice High Standards (which are underpriced to me).
Contact me if you'd like info.
Kevin