I have a done a few small projects now and normally buy the 20 kg bags of ready mix mortar from the sheds just wondering what I can try to do it for less cheapest I can find ready mixed is about 50p per kg how much would I save buying the cement and sand (probably not the 1 tonne bags though I want to be able to chuck t in the van as and when I need it). Or is it possible to buy ready mix cheaper anywhere?