If your looking at buying a  DD-5.1, there is a one or two for sale on ebay.  One is mine, and the other is being sold by someone else.  Here is the links for both auctions:

http://cgi.ebay.com/Klipsch-ProMedia-DD-5-1_W0QQitemZ300198192251QQihZ020QQcategoryZ156542QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

this auction ends Feb-18-08 08:47:20 PST

http://cgi.ebay.com/Klipsch-ProMedia-DD-5-1_W0QQitemZ330211366172QQihZ014QQcategoryZ156542QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

this auction ends Feb-21-08 10:42:17 PST