Is there a gold standard among ecommerce shopping cart packages?
I develop eCommerce sites for very large companies and keep abreast of the shopping cart world as much as I possibly can. One approach for pure .NET e-commerce is Commerce Server. You can tweak the reference implementations that it comes with to something that suits your needs. Everyone’s definition of Gold Standard is different but since Microsoft develops Commerce Server actively, it’s got to be one of the top in the category. Magento is the other one for small to medium scale PHP sites and seems to be making quite the splash in the e-commerce channel.