I have found CWC and Devon overly expensive and not very helpful. Both seem to have a ‘take it or leave it’ attitude and we know what that did for the UK motorcycle industry.
Stainless is not a precious metal and spoke machines crank out spokes at speed, so charging £2 or thereabouts for a spoke is, in my view, way over the top. But they can ‘throw in’ the nipples (which take more work to make) thereby highlighting the problem