This week Vodafone launched its 'Ultimate Speed Guarantee', making it the first UK provider to offer widely available guaranteed minimum internet speed.
We were concerned that would mean prices would fly through the ceiling, but Vodafone is still offering the market's cheapest fibre broadband deals.
The price of Vodafone Superfast 1 broadband is just £21 per month.
That's an incredible price for a super fast 38Mb connection, especially when you consider that it will guarantee at least 25Mb.
As you'll see from our best fibre broadband deals round-up, the next best monthly price for unlimited super fast internet is Plusnet's £24.99pm.
Vodafone's super cheap fibre broadband deals