SharePoint enthusiast and Microsoft Certified Trainer in the Netherlands, Nick Boumans, has written an article on 'E-Commerce Using Microsoft Commerce Server 2009 and SharePoint' for Dutch .NET Magazine #3 (September 2009). The article discusses merits of using Commerce Server 2009 in building a SharePoint based e-commerce solution. 

To download a copy of the article, visit Nick's blog: (English article) / (Dutch article).