Here's one that sold recently for $600, with only one bid:

http://www.ebay.com/itm/1985-Olympus...-/251144198844
Either this seller had/has two of theses lenses...or it's back up for sale again.
At almost four times the previous price, though...$2000.USD this time.

http://www.ebay.com/itm/Vintage-Olym...item3a7ae7aa31