Last time I checked, Icelandair was still offering the buy-one-get-one free deal if you are a member of the Amtrak program. Correct me if I'm wrong...

In my mind it all plays out on a specturm. On one end is cheap/free and a certain amount of inconvenience. At the other end of the gamut is full-price and hopefully great service/scheduling, etc. Since I'm not independently wealthy, I like to live at the cheap/free end of the spectrum, and just anticipate the hassle factor being rather high. My wife hates the hassles, but loves the low cost. I tell her that if we want to travel cheaply, we just have to be willing to put up with some unpleasantries.