e2save.com have the Nokia 5310 "Xpress Music" phone for just £49.95 when you buy £10 top-up on T-Mobile pay as you go. Delivery is free of charge. So that's a total package price of £54.95 (as shown on this deal) for the phone AND the £10 airtime, delivered to your door.
The Nokia 5310 mobile phone is the latest in the Xpress Music collection, its big on sound but small in the pocket. Enjoy the fresh compact design, which feels great in your hand, with a sleek aluminum casing and only 9.9mm thin, the Nokia 5310 is a real all-round mobile phone. With features such as the 2-megapixel camera, MP3 player and Bluetooth for transferring all your multimedia files what more could you want. Finally plug headphones or speakers into the 3.5mm AV plug to complete your music experience with the Nokia 5310 Xpress Music mobile phone.