Most German .22 revolvers found in the US are inexpensive guns that are no longer imported. If so, probably about $20-$50. But since you didn't give a manufacturer's name or model, it could be something better.
About $25.
25-75 USD
50 or so
Korth
10-100 USD depending on specifics
50-100 or so
More information is needed to identify the manufacturer of this pistol. No references found.
Fabico was the US importer of German inexpensive revolvers of indifferent quality, Depending on condition, somewhere around $50
20-100
100 or so
100-1000 depending on specifics
10-100 usd