I have a 19-5 which I intend to hang on to as long as I can. It's almost as easy to pocket carry as a J-Frame and quite a bit easier than an L-Frame.
I have a small track on the 2-1/2 inch Model 19:
Smith & Wesson Model 19 2-1/2 inch barrel. Revolver in .357 Magnum,.38 Special, Plus . Bluebook of Gun Values (32nd Edition) indicates between $325 in 95% condition and $550 in 100% condition for this gun. I have 27 recorded prices for this model gun from $395 to $795 over a period of 4 Yrs 2 Mos ending June 22, 2011. The average price as of that date was $531. No refurbs, no refinishes, regular sights. All represented as 95% or better. No distinction for engineering revision, if any, no special editions, no distinctions for box, papers, tools. Current or last MSRP is $457.
I don't have a particularly high data count Average Price Trend Chart for this but I think it's safe to say the snubby 19 is increasing in popularity and the average price is trending upward.
The monthly count seems to be increasing, too, probably to take advantage of prices being obtained. That could be good news or bad news depending on whether or not the model remains in demand. Either way, prices will almost certainly increase for a while.
Here's the chart:
Note the Average Price Trend as of June was about $540. I'd have more confidence in that if there were more data points, so I'd say that was high by as much as $40 for the average. Better examples of the model would command higher prices, especially with box, papers, etc.