Posted: 30/01/2016 at 18:05
It's ok to try and find the cheapest option but IME it can be a waste of money. I know it is not always possible but try and find an open bag and have a poke/feel before you buy. The composition varies so much........once upon a time, you could buy JI and be sure of the quality. These days, they manufacture a compost under this name and altho they should keep to a formula, they also bulk out with all sorts.
As Verdun suggests, you may be able to get a reduction on a torn bag but if the compost is crap, all you have is cheaper crap.
It's a bit of a minefield these days