I was again on a Swiss Airlines flight a couple of days ago and had a look into the board magazine. They are selling Beosound 2 and Earset 2 duty free, which effectively around 8% less than the regular prices we have in Switzerland (basically less VAT). The headphones even come with a plug adaptor for the aircraft chair socket, which you don't get in a regular B&O shop. Looks like a good bargain.