We buy a few 25kg bags from either Wicks or B & Q depending on where is cheapest and split them up between our neighbours. Us 'younger' ones do our own drives and paths plus the areas around our 'older' and less able neighbours homes. It only cost us a few quid each and keeps everyone safe. The lot we have now we bought a couple of years ago after the last big freeze depleted our stock and I'm hoping we won't have too much cause to use it this year.
Wikes are selling it at £4.99 (25kg) at the moment.