Amazon allows customers to track orders, modify orders before dispatch, and pay through various payment methods like credit cards or their own Amazon credit card. Customers can sign up to receive emails about special offers and discounts based on purchase categories. They can also create wish lists of items they want to buy in the future. Play.com similarly allows signing up for exclusive offers and buying various products with different delivery options available. EBay UK allows paying through PayPal for purchase protection and receiving emails about special offers after purchases. Both sites provide order tracking capabilities.