New in box, for just a basic Gen 3 model, you can expect to pay $600 - $650. I haven't priced the Gen 4 models yet.
You'll need to be more specific - there are 5 pistol models that use .40 S&W rounds. They are: -Glock 22 -Glock 23 -Glock 24 -Glock 27 -Glock 35
From the Glock company itself, it retails at $499.00
100-400 or so
A Glock 19 is a pistol. The Glock 19 is their compact, 9mm, 15 round, pistol.
A new one retails for about 500 dollars.
The Glock 22 is a full frame pistol.. a .40 S&W version of the full sized Glock 17, whereas the 23 is a mid-frame, and is essentially a .40 S&W variation of the Glock 19.
Very likely, it's the Glock. Glock in general is the best selling pistol in the commercial and law enforcement market.
500 or so
The Glock 22 .40 caliber standard frame pistol and the Glock 23 .40 caliber compact frame pistol in rare cases the Glock 27 which is a sub compact. They also may use AR-15s and 12 gauge shotguns for more tactical situations. In addition, Marshalls may also carry a pre approved backup pistol of there choice.
Yes, the Glock 18 is fully automatic.
200-450 USD
Glock first introduced the G22 .40 caliber pistol in 1990. Today it is the most commonly carried sidearm for police offers in the United States of America.