Vodaphone used to offer £15 for 1GB but it didn't run out after 30 days like most others, ideal for a low user.
They now have a new pricing structure, I would be interested if anyone can explain the following no-brainer.
Sign up for 24 months at £25 a month for 1GB data a month and £15 for each 1GB over this limit.
Don't sign up for any contract, pay £15 for 3GB data for one month.
There are loads of other options that don't make sense (and NO, its not an april fool) CLICKY