We've had this deal before when it was offered through Coles, but now it's back and available through Telstra's official website. Happy days!
The dongle would normally cost you $49 but the good folk at Telstra dropped it to half-that — $24.50 if you're playing at home. It's the Next G dongle that can achieve speeds of up to 8Mbps and it'll also come with 1GB worth of data to use in the first 15 days, too. [Telstra]