$500
It depends on which model and whether it is new or used.
550 dollars for new one.
The cheapest pistol I am aware of is a revolver I bought for $37. Upwards of that, the sky is the limit. Average cost of a new pistol is in the $300-500 range. Used guns are slightly cheaper. Custom-built handguns, like competition pistols are often between 3000-5000. Collectible pistols can cost tens of thousands of dollars.
A new 1911 pistol, imported from the Philippines will start around $400--$450. Decent weapons & reliable. A new American-made 1911 can start at $650 for a base model and go all the way to $2000+ for custom, high-end models. These prices are for fall 2015.
Not really. It will leak out eventually. Besides by leaving a charged C02 cylinder in the pistol keeps pressure on the seal and this may damage it over time. I always take the cylinder out of the pistol when I am finished shooting. No matter how much C02 is left int the cylinder. It doesn't cost that much to put a new Cylinder in the pistol when I want to use it again. Besides leaving it in the pistol will eventually reform the seal. I want it to return to a normal shape between shooting sessions. Is it cheaper to buy a new cylinder or have the pistol repaired because the seal is warped.
Tommy Pistol was born on July 2, 1976, in Queens, New York, USA.
New Orleans bayou
NO
From a New York gun dealer.
Maybe 70 USD
Best left to a trained gunmsith