There are LOTS of on-line sites. I just got my (nothing fancy -- I'm no HTML/web specialist) website up, LindaNielsenJewelry.com, so feel free to check there. I don't have a huge number of items up yet, not nearly as many as I have, because I'm preparing for a show, and have lots of items -- and haven't had as much time to spend on the website.
I also second Etsy, even though I'm not there. And don't forget Ebay; some bargains can be found there. Not sure if China is always going to be cheaper -- it will be dependent on the item, the quality, and the strength of the dollar, which, of course, varies.