ain't that the truth my local one does Biobizz All mix (20 litres) for £6 - 20% sphagnum peat moss, 35% garden peat, 10% high quality worm manure, 30% perlite and 5% mixture of organic fertilizers, admittedly couple of quid more than what I'd pay for 20 litres of standard in B&Q but I'll pay £2...