We work for many years. When we were starting we used „old” money. I remember lost negotiations over the price of our services in a large project. The organization said that they cannot pay such a big price. They have chosen a different company to work with. After several days I found out that I made a mistake in recalculating the budget from old into „new” money and added one zero too much. Of course it would be the best and cheapest offer. When I called them, they had already signed contract with the other firm.