If you miss the one on ebay and still want one, you can still get a new one made by TA. Every bit as nicely machined as Campy but made in the typical TA beautifully mirror polished aluminum. I have them for $40. Beware though, with TA or Campy, you will need to grind away the inside edge of the spider arms on your crankarm if a vintage chain is to clear without making noise. That is why Campy only "officially" made them as small as 42T.
Bob Freeman
Seattle