You can get the Huawei E353 USB stick modem from BuyMobilePhones for as little as £12.66 per month on a two-year contract with Three.
The price of the contract stands at £15.99 per month but you get an automatic £80 cashback which brings the total cost of ownership from £384 to £304 or around £12.66 a month.
The money is guaranteed and doesn’t involve, unlike traditional cashback offers, any form of manual redemption. More importantly, the money is paid directly in the customer’s bank account.
The package includes 15GB data and the Huawei E353 USB stick modem looks like a USB flash drive, supports HSDPA speeds (no DC-HSDPA or HSDPA+) and is plug-and-play.
If you want significantly more data allowance, hotspot capabilities or do not want to have a very long contract, an interesting alternative would be to use a cheap Android smartphone that supports Android 2.2 and shove in a “The One Plan” SIM card.
Three sells the Alcatel OT903 for £40 on PAYG and you can get a SIM card on “The One Plan” from as little as £25 for 30 days with 2,000 minutes, 5,000 texts, unlimited data and tethering (or £17.42 if you go for a 24-month contract).