Well, you can get a new first class repro from MVA for $575.
Winchester A5 and B5 scopes seem to be in the same price range.
Lymans are thought to be nicer made than Winchesters. I could only find a couple for sale. One at auction with starting bid of $510, another with asking price of $850 which seems like a lot considering you can get a pretty nice Unertl or Fecker for that.