Ebay is a level 3 website. It has a store front, user registration is required as well as geographic information, for shipping/billing purposes.
Jamdeal is a Jamaican online store. It has a store front, user registration and requires geographic information. These features make it a level 3 website.
Comedycentral.com has a shop area, as well as a user log in and registration that requires geographic information. This makes comedy central.com a level 3 website.