dsk...
You have what looks to be a very informative site. I will be interested to see what you put in the Remington-Rand section. I had a 1943 R-R which my first wife asked for in the divorce. I wish now that I had said no. IIRC correctly I paid about $300 over 25 years ago. The pistol and finish were in good shape but the barrel (don't know if it was original) developed a bulge and I had to replace it.
Pricing an older firearm seems to be a very contentious and subjective area, especially as they get a bit rarer. The problem is, there always seems to be someone who will pay a high price.