If you can get the price significantly below the lowest price people can find online, and it's not too inconvenient to use your site, then yes you can have a su

If you can get the price significantly below the lowest price people can find online, and it's not too inconvenient to use your site, then yes you can have a successful group buying service. I'm not sure how feasible that is, because the things people are most likely to buy online in a group are electronics, computers, phones, etc., and the margins are already so thin you'll have trouble beating buy.com, newegg, and amazon.