Manufacturing bosses, let’s do the maths. You spend 100,000 on a trade fair; factoring in travel and staff costs, you might end up with just 20 business cards, and who knows how many of those will actually lead to a sale. On the face of it, the one-off investment seems reasonable, but when you factor in the time your team spends running around and the other opportunities you’ve missed, is it really good value for money?