I am far from an expert on the subject, but I believe that the Femaru Model 37 pistol is Hungarian and was made in 7.65mm (.32 ACP) as well as .380 ACP.
They are not scarce, but, never having bought one, I am unsure of what a good price is. Though not the last word on prices, these values from the latest Standard Catalogue of Firearms should give you an idea:
Excellent.........$350.00
Very Good.......$275.00
Good..............$225.00
Fair................$150.00
Poor...............$100.00
Prices on Gunbroker seem a good deal higher in many cases, mostly due to special markings or accessories that increase value. Here's one:
http://www.gunbroker.com/Auction/Vie...Item=118155616
Hope this helps.