its every sales persons job to increase margins as well

Margin funds acquisition to win new customers.
Some of our largest customers will spend a couple of million one month and change brands next month to save £20k, then switch back again.
Its a funny game sometimes but as I say when your on it its very rewarding in terms of satisfaction and of course in your pocket.
Not a great time at the moment with the credit crunch as its seriously affecting most sectors. But then again depends what your flogging