eShop is an ASP.NET e-commerce shop with recommender technologies. It features a shopping catalogue with unlimited sections and shelf space, a search engine, a database driven shopping cart, several pseudo A.I. recommender technologies to encourage and enhance the shopping experience (akin to those of Amazon), an item review and ratings system, and an order and shipment management system, and a sales data warehouse. eShop (for PayPal)* is a version that integrates with PayPal, the leading online payments application service provider, own by ebay. eShop (for PayPal) features seamless integration with PayPal, including the capacity to receive and intepret PayPal Instant Payment Notifications (IPNs) for automatic payment verification.