The service, available from an initial 300 stores, costs GBP2 from Monday to Thursday and GBP3 on Friday and Saturday. There is also be a free service offered on orders over GBP40 for customers signed up to the Amazon Prime-style Delivery Saver scheme. People using the service will need to order before 1pm in order to pick up after 4pm in one of two slots: 4-6pm or 6-8pm.