15-50 USD or so
FRG
These were low dollar firearms of indifferent quality when new. $25-$50, depending on condition.
See the link below. This will take you to the schematic for an RG 14 at the Numrich gun parts corp website.
saturday night special most gunsmith won't touch it I hear you can get parts though and yourself.
25-60 USD or so
Mainly in the 1960s, in what was West Germany. These were low cost low quality firearms, and importation of most of the Rohm/ RG handguns was halted (in the US) by the 1968 Gun Control Act. Due to major quality problems, would urge you to have checked by a gunsmith before firing.
rg14 2er
25-50, no more
I do not know if it is unsafe or not nobody can say that without seeing it, but Ruger did not Make a RG 14 Rohm Did,
The Hilton Newbury Centre is located in a small town in the south of England. Their address is Pinchington Lance, Newbury, Berkshire, RG14 7HL, United Kingdom.
Around $25-$40, depending on condition. These were very inexpensive handguns of indifferent quality, and make good paperweights. Most were banned from importation to the US by the 1968 Gun Control Act. They tend to wear very quickly due to a frame made of zinc alloy, and may become dangerous to fire.