How to use a wordpress to build a commercial website as shopping cart? I find that many website was established with wordperss and plugins,than it can be used as a shopping cart. So I looked for the plugins for wordpress eshop. Finally, I find it. There is a wordpress plugin named eshop. It is so powerfull. I used the wordpress 2.9 and eshop 5.0 and finally finished my first wordpress iphone case shop. Hope you can have a look at http://www.iphone-case-shop.com. May be, it is helpful for you!
I would not use wordpress, for shopping website, but choosing anotther free shopping cart sofware like oscommerce, zen cart etc. Because they are made for shopping cart. Eventhough it's possible to use wordpress.