This thread brings to mind an interesting (and I think important) point. There is NO value to any particular gun - or any other object - than that which a particular individual, at a particular time, is willing to pay for that object. We all know this - but I think it bears repeating.
Case in point: My recently sold model 10-8. Far from pristine, but mechanically excellent, no box, etc. Yet, someone was willing to pay me $475 for it, plus around $70 in shipping costs. The 10-8 is a 3" - which many (including myself) hold in very high esteem. I myself, a few weeks ago, paid $500 to an individual for a 3" HB/ RB model 64, in excellent condition (but with no box, etc.). Why ? I WANTED it - because 3" HB/RB's are my favorite configuration - and the model 64 is my favorite model.
Since I like the 3" model 64's so much, I likely would have paid more, if necessary.
So, what is the REAL value of those two guns ? I was surprised that anyone would give me $475 for my 10-8 - I would NOT have paid that much for it. Yet, for the same gun, except in stainless, I happily shelled out $500....and would have paid a bit more to get it. So, it could be said that the value of those two guns was just what was paid, by the two individuals involved, on that specific day.
On another day, with other individuals, however, the selling prices might well be very different.
There is a certain model 15, in about 90% condition, sitting in a gun case at an LGS nearby to me, priced at $399. Some people on another thread have said that they would "tear their pockets" while rushing to get their wallets out, in order to get that gun. While I don't by any means think that the model 15 is overpriced, I would much rather have my $500 model 64 than that one.
The point of all this being, we can attempt to keep track of price trends on things like these fine revolvers that we prize so much, as if the prices actually make sense, or follow some rules. But, they don't. That is why prices I see are literally all over the place. So, in essence, threads like this really don't nail down anything. Prices for things like these fluctuate, by the day and hour. That's just the way it is. It's not scientific and the "normal" rules of economics don't always apply.
So, how much is a "run of the mill" model 10 worth today ? Just exactly what someone is willing to pay for it - nothing more, nothing less.