.Advantages

• Wider market
• Wider supplier-base
• Costs Automation and Savings, i.e., automatically generating invoices based on forms filled out on the Internet)
• First impression: you look bigger than you are.
• Fast Respond Time to customer queries quickly and cheaply

Disadvantages

• Costs $$$$
• Qualified Staff
• Fraud
• Marketing $$$$

Requirements

• A Website
• With a Sales Funnel!
• Merchant account (to take credit cards)
• Secure method for collecting data (such as credit card numbers)
• Means for customers for collect products (i.e. a "shopping cart")