Terms of the cost, how does that work out? ., , , ., , work out? the more units you put in, the lower the — work out? the more units you put in, the lower the cost, _ work out? the more units you put in, the lower the cost, but _ work out? the more units you put in, the lower the cost, but the _ work out? the more units you put in, the lower the cost, but the costs - the lower the cost, but the costs are still substantial. so the question is, is this the best investment to make? we are all passionately wanted to keep children and young people in schools, and we are desperate to try and impro...