No. You are
not allowed to place a link
ON eBid
TO an e-commerce site (such as yours). You
are allowed to link
FROM any site
TO eBid (as long as that site is not one that would bring eBid into disrepute by association).
See:
Site:
http://uk.ebid.net/help_selling.php#29
Forums:
http://www.ebid.net/forums/announcement.php?f=72&a=3
The reasoning (I assume) is that eBid, as a business, does not want business diverted away from their site to another e-commerce site, or for their site to be used as an advertising medium for another business.