Brief: Mention what you intend to sell and how much daily sales, number of visitors you expect.
Design Preferences: Mention any theme/kind of website design that you prefer (Mention Sites).
Technology Preferences: Magento / Wordpress + Woo-commerce / Prestashop / OpenCart / Custom (LAMP / MEAN Stack)

User Features:
Shopping Cart
Grid/List View Display
Add to Wishlist
Buyer Account Creation
Payment gateway Integrations
Multiple Currency Support

Admin Features:
Inventory Management
Admin Stats Dashboard
Email Marketing Integration