A current promo deal from 3 means you can get its Pay As You Go mobile broadband dongle for £10 (usually £20) and a 5-album Datz.com download voucher worth c. £35 on top.

While the dongle itself has been cheaper (£5), the key here's the download voucher, making it worth it for music fans even who don't want the dongle

http://www.3dongle4free.co.uk/