Anywhere from under $100 to over $1000, depending on which handgun you had in mind.
100-260 or so
Between $600 - $700, new in box.
It depends on the brand and model.
There is no 32mm handgun. That would fire a bullet more than an inch in diameter.
It depends on which gun.
100 USD
S&W never made a 25 ACP handgun for retail sale.
$100,000,000
50-100 USD
200
As of 2015, about $120.
The Rohm/ RG revolvers were generally very low cost firearms of very low quality. Values are generally in the $20-$40 range.