There is not a great selection of free laptops available for less than £20 a month as the free laptop has to be paid for in some way by the mobile broadband operator. Any package under £20 a month should be considered an entry level product for low mobile broadband users.
In fact there is just one free laptop deal on the market at the moment that you can get with change from a £20 note.
At this price, you forfeit a little on the specification of the laptop as well as the data transfer allowance, however this is perfect for low usage customers who want to occasionally use their free laptop out and about but don’t use it for every day for their main internet access.