Many people, when searching for transportation, will only search local companies in the city they are traveling from, this can be a mistake.
Take for example our nearest airport, Geneva. If you were to choose from the large list of Geneva based companies you would end up Paying a large premium over companies based in, for example, Chamonix.
Its often the case that companies based out of the city have lower overheads and as such can keep their prices a little lower. A vehicle traveling to an airport from the destination to collect a client is often more economical than a vehicle Traveling from the airport to that same destination.
So remember search for transportation in your destination rather than you departure point, it could save you time and money.