Question: what are the main advantages and disadvantages of using e-commerce for the customer?
Answer: A Larger Market. ... 
Customer Insights Through Tracking And Analytics. ... 
Fast Response To Consumer Trends And Market Demand. ... 
Lower Cost. ... 
More Opportunities To "Sell" ... 
Personalized Messaging. ... 
Increased Sales With Instant Gratification. ... 
Ability to Scale Up (Or Down) Quickly And Unlimited "Shelf Space"