Build an Online Store like gilt.com

Private shopping ecommerce site.. web site project same with [login to view URL] Features: Addition to normal ecommerce fundamental features, followings are needed ; 1- Can list products for only selected organization members for different price, 2 - Show products' size envantory (show only the size marks that exist in stock, for example : S – M- XXL; L and XL is not exist and they will be gray color) on listing page and product page, and 3- On product list page, user can filter items by SIZE, CATEGORY and BRAND, 4-in product page, user can see and select product colour 5- Normal and discounted of price of the product is seen on product list page and product page 7 - before presentation of the product page, want email from user, 8- Some product has end time, and this time is seen on product page 9- campains and disscounted group of products, selected campaigns should be presented on home page, and all campaigns appears in related MAIN MENU page and other modules and features needs are; 11 Product Description Filter Options 12 Category / Brand Discount 13 Excel Registration and Installation 14 Category / Brand Discount 15 online billing print 16 Sending E-Newsletter 17 Payment gateway for bank and paypal 18 Sales Support