Transportation From The Airport, To Your Destination.

I cannot stress this enough.  When flying into a new destination within Europe, please schedule your transportation in advance, and negotiate a price to your destination.  Many taxi companies that wait outside the airport will often charge you extra for a baggage fee (around 10-20 Euros).  By negotiating a ride in advance you can also guarantee that they will take the most direct route to your destination.  Has anyone else run into this in the past?