Potting compost - the sort you reconstitute

To my dismay I find that Wilko has now discontinued one of its more useful products: a bag of 'dry' coco coir peat-free compost that you reconstitute at home using 12 litres of water to make 40 litres of compost, for just £4. They sell a smaller bag - 15 litres for £4, which is rather less impressive in terms of value.


Please does anyone know of any other national retailer selling the same sort of thing? Plenty selling the big and heavy bags of compost, but this was a boon for those who don't have a car to transport heavy bags of the stuff, or for anyone who doesn't want to heave a heavy bag around.