No such weapon. A Model 59; 50-500 USD. A generic S&W 38 special; 50-450 USD
There is no "average" price but it appears that this model, used (which is the only way to get it now as it has been out of production for years)& in good condition is about $250.00+/-
100-1000 USD depending on specifics
50-550 usd
50-350 usd
S&W has not used 19a as a model designation.
250 or so
100-450 USD or so
100-300 or so
300 USD
50-500 usd
Not recommended
100-300 USD