I own some as well.
I love the carbon steel, 8 shot, model 27s.
There have only been 6 variations of the carbon steel, 8 shot, model 27s so far. Here is one of each of those six variations. These six revolvers remain unfired since leaving the factory. All six are the same serial number with different prefixes.
Value depends on if you are buying or selling. You would have to offer me a suitcase of 100 dollar bills to make me sell any of the 8 shot 27/327/627 revolvers that I own.
However i would not spend that much to buy one. Value of one I am going to buy depends on which one, condition of the firearm and completeness of the package (box, papers, etc). However a fairly clean, fairly complete one will easily top the $1000 mark on the auction sites.