Products in Amazon China are cheaper than Amazon in the UK. Today, companies that collect consumer information and purchasing habits and then charge separately are considered standard practices. Large online retailers can use cookies on their sites and gain a lot of information about their customers such as browsing history and location. Cookies are a type of message that the web server sends to a web browser which then stores the information for later use. For example, companies informed their previous customers about current discounts and offers via email. The main purpose of cookies is to collect information about the user such as the user's location and present different versions of web pages based on the information received. However, companies must implement privacy policy and not share or sell customer information to others. For example, amazon.com will personalize its advertising based on the browsing history of its website visitors. Each customer receives a different version of the website with different product recommendations and