In my opinion the Guardian is the most reliable "news source" in the UK. Not only does it reflect my "progressive" politics but it is not afraid to also report on items that might be adverse to the "left" in the UK and beyond. It not only is strong in it's UK coverage but it has a separate Australian issue which is sadly needed in that land and it's US edition also seems well-balanced to me.
The Guardian is my browser's home-page and I pay a online subscription to the Guardian as I think it is important to support independent journalism and defend ourselves from the politically-biased ownership of other newspapers.
Newspaper prices in the UK are kept unrealistically low by the right-wing press, trying to ensure their brainwashing propaganda drives real news into the dust. So no the Guardian price will probably not be reduced when it switches from Berliner format, it needs to outsource it's print-runs just to save money as the cost of running the Berliner plants is crippling them.
(Unfortunately the BBC seems these days to be afraid to upset the government in case they get their funding cut even more so their news coverage's comprehensiveness and critical analysis is becoming less reliable to my mind. So that is no longer my go-to source for news.)