I bought a ring there once - it was a good price, and I got it without a problem. The one thing I did notice is that on anything where the price looks too goo to be true, if you bid, you can bet you'll be WAYYYYY outbid before the auction ends. Not sure how it works - probably like schill bidding on eBay. So it's kind of hard to win anything at a bargain price.
That said, my McAfee virus software had an absolute fit every time I log in. So there must be something fishy going on - it comes up as a red site (most reputable sites are green, and some questionable ones are yellow). Use with caution, I guess.