What can I do to get more retail traffic to my site?

I've opened up a fairly large online retail site (www.rockbottomsale.com ) 2 weeks ago. Over those 2 weeks I've taken a few orders but not as many as I would like. I have submitted the site ( www.rockbottomsale.com ) to all of the major SE's and have been listed. I'm now looking for some advise on how I can get more traffic flowing. The site offers over 215 thousand items at extremely low prices. The site has been crawled by google but when I type an item in and run a shopping search on google my site does not come up for the item. Maybe google did not crawl each item page and only the mail www.rockbottomsale.com page? Any help would be great!