Crash,
For the old model with the selector on the side, $0.02.
The ones with the selector on the hammer were better. Neither was any world beater for accuracy, reliability, or any other plus. The side selectors were always breaking and the ones with plastic stocks left pieces of stock lying about in the woods.
Still, some people used them a lot and liked them. If one fits your needs, pick one up at a gun show (they are usually pretty cheap).
Jim