Another eBay heads up, pair of ball screws

After thinking this one over for a couple hours, I'm going to pass on
it, so here's another potential eBay deal:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=457428759
This is for a pair of 1" dia ball screws 41" long, with 6 ball nuts.
They look to be a 4-start thread, based on appearance and description of
a 1" lead. Made by Warner Electric, current price with 12 hours to go is
$31.

Jon