Have a look at the mambo website for
auktionsbuddy (http://www.auktionsbuddy.de),
the famous german ebay tool for sellers
i was excited over the fact there might be a ebaylisting program for joomla so I emailed the fellow and it only works with (the othere less featured ecommerence package)
Kinda useless for joomla or virtualmart , shame
he did mention that he could convert it to work for canadian listing though of cource just for othere ecommerce package. Ugh
there is alot of activity here on this site on a listing package i am trying to get going
http://virtuemart.net/index.php?option=com_smf&Itemid=71&topic=8858.0