The last 4-16x44 LOW Weaver I found used about a year ago had plain fine crosshairs, no duplex. I don't recall if it was $45 or $60 but I bought it and gave it to a buddy who helps out w/local kids doing the rimfire matches. I'm sure I could've found something to put it on for myself but I figured that the kids needed it more than I would.
Those are $200-$350 on ebay. Like everyone has said, here, they are damn good scopes. Work great on a rimfire, for sure. Good on you for giving that one a good home.