I traveled to/from Spain (from west coast of US) this past May and had no issues whatsoever. I flew on British Airways and was only charged for bringing a second bag; in fact the agent at the baggage counter was surprised that a bike was even in there. One of the other things that is great about this case is how maneuverable it is with the swivel wheels in the front. It was quite easy to walk with my bike case and other luggage by myself. Plus, it folds up and out of the way when not in use.
I did see the case for sale at probikekit.com for around $505 US.