Well Matt thats an interesting point, In relative terms $40 is very little.....
Terminal 5 at Heathrow is projected to cost around £4.2 Billion!!!!!! That is around $8 Billion!!!!!!
http://www.heathrow-airport-uk.info/heathrow-airport-terminal-5.htmThe third runway at Heathrow is going to happen, the government will make sure of that, it is vital to UK economic expansion and it will also include a 6th Terminal. The cost for Runway 3 & T6 is projected to be £7 Billion
That's a total expansion cost of around £11.2 Billion over the next 12 years! (Roughly 22 Billion USD at current exchange rates)
Sort of makes $40 million look like peanuts!