A co-worker showed me this site www.bidz.com  and I registered to try it.  It shows jewelry and artwork, and the time clicks down, and show you what the current bid is.  If you register for free, and start bidding you can buy most of these items within minutes. 

I love it, I just bought a diamond/emerald ring for $19!!  no kidding, and they offer free shipping from 11PM - 11AM each day!