FAQ: Can I use NewsBreak to get my current eBay auction status?
Not directly from eBay’s site – but there might be third parties that provide this service. Right now, eBay is providing feeds only for General Announcements]
http://www2.ebay.com/aw/marketing.shtml, System Announcements
http://www2.ebay.com/aw/announce.shtml, and the results of an auction category or search listing (look for the RSS links at the page bottoms).