It depends on the model
$75-100
20-50 or so
High quality French pistol, they went out of business years ago.
it might be a model from 1975
10-225 USD or so
The Model 101s were manufactured from 1960 to 1968. Read more: I have a pistol says model 101-22 cal.lr Savage arms corp - JustAnswer http://www.justanswer.com/firearms/55oem-pistol-says-model-101-22-cal-lr-savage-arms-corp.html#ixzz2C9GFDwY3
You did not say which model. The Erma-Werke KGP68, which looks like the traditional "Luger" pistol, is about $250-$500, depending on condition. If you have a different model, please repost with that information.
5-60 USD or so
25-125 USD or so depending on specifics
125 or so
Proofhouse.com