DotNetNuke comes with both Store and Survey modules. I installed them on a couple of customers and they look good.

Take a look at the DotNetNuke Survey here. This customer created the survey himself with no help from me.
www.dgaffney.com/Home/Survey.aspx

You can see the DotNetNuke Store here. I set this up for the customer, but it was easy enough for anyone to add products.
www.verajoffe.com/Store/tabid/479/CategoryID/1/Default.aspx

Also take a look at here Articles page. She posted these herself. Somehow she figured out how to get the images in there also. Congratulations. You can she is already getting visitors without any other publicity.
www.verajoffe.com/Articles.aspx