Value of any handgun depends on the condition. You'll want to inspect the bore, muzzle crown and see if the bolt is still smooth but not shakey in the receiver from wear. $300 is a great price on such a pair if they are in good internal condition and even if the outsides look like the dog has been chewing on them. But if the insides do not pass then they aren't worth that much even if the outsides are sparkly and new looking.