Seeking Advice on Cloning An eCommerce Site.

I have not done anything like it. I've been contacted to model MedLine.com. What will the cost look like to do something of this magnitude in MODx? About seven sections:

• Customized Content based on visitor’s area of interest
• Products (branded as medline)
• Solutions
• Research
• Education
• About Us
• Blog
Univerisyt

I'll appreciate thoughts and suggestions.