I've had one since I gave up my regular FFL during the Clinton-era crack down. Since my tastes run to older classic firearms , it's well worth it. I've bought dozens of guns with it , including several S&W revolvers. Works at most auctions and at gunshows when PICS is down too.
BTW, PA State Police say that they do not recognize C&R handgun purchases as valid because there is no record in their illegal "record of sale database".