S100 to $400. depending on exact model and condition. There was a large number of these revolvers that were imported to the US, and had their barrels shortened to snub-nosed length. They are the lower end of the price range.
20-100 or so
50-75 USD
25-1500 usd
50-75 USD
100
50-75 USD
According to the "Blue Book of Gun Values", a Webley mark IV .38 in 100% condition is worth $450, in 95% condition, $350. It was made and issued to the British military during WWII, and is still used today by police in some countries.
50-200 USD
25-125 depending on specifics
250 to 500
$100-$150
25-175 usd