Unfortunately some airline companies (e.g., Dutch KLM) started charging extra for exit row seats because of the premium of extra legroom. So not only do you get

Unfortunately some airline companies (e.g., Dutch KLM) started charging extra for exit row seats because of the premium of extra legroom. So not only do you get the extra noise and cold draft that come with aeroplane exits, you also get to pay extra for the privilege of not ending up suffering from deep vein thrombosis after a twelve hour flight.