This will depend to some degree on the barrel length. A 4 inch .38 Special revolver has an effective range of about 50-60 yards.
Depends to some degree on the barrel length. A 4 inch revolver has a maximum range of about 1000 meters- however, the maximum EFFECTIVE range is about 50-60 meters. That is the range where a shooter can reliably hit the target.
50 metres/yards, about half of that in a combat/real world scenario.
3 miles
To some extent, this will depend on the weapon that fires the cartridge. Assuming that your question relates to the .38 Special cartridge, when fired from a 4 inch barreled revolver, the bullet would have a maximum range of about 1800 meters. This would be when the barrel was elevated at about a 45 degree angle. The effective range (usable) would be less than 100 meters. If fired from a rifle (yes, there are rifles that will fire a .38 Special) the range would be greater than if fired from a revolver. If fired from a 2 inch barreled (snub nosed) revolver, the max range would be less.
They can range from 100-5000 USD
38 special
Depending on who makes it, they can range from 25-5000 USD.
The strongest ammo available for .38 (and for most any other caliber) is plus-P-plus. However, .38 special is not particularly effective against bears.
100-1000 USD depending on specifics
Depends on condition and other factors. Range from 100-300 USD
Values can range from 100-1000 USD