In 1873 the Colt Single Action Army revolver sold for $17.50. Other handguns could be purchased for less.
$489!!
To legally purchase or own a handgun, you must be 21.
The most accurate handgun is the CZ 75 SP-01 and it retails at around $600 - $700.
One is 6 months old, one is 120 years old- but we can't answer your question. Please rephrase it with some information on YOUR handgun, and repost it.
25-65 USD
21 years old
21
100-350 or so
50-200
Old enough to have money
It depends on where you are. In the U.S. 11 year old children cannot own a handgun, but it is legal under federal and most states' laws to possess the handgun for legal purposes such as hunting and target shooting.
Rifle, shotgun, or handgun? The 10 gauge shotgun at close range would be very high on the list, as would some of the buffalo rifle cartridges, such as the 45-110. The .45 Colt revolver was possibly the most powerful handgun of the day.