Liz, yes, the exchange basically covered 1 persons fare, that is what I mean by 2-for-1. I did check the prices elsewhere and I could not have gone elsewhere to get the same deal. At least at the time.
As I mentioned, I'd have to believe that the deals from II for a cruise exchange haven't been that great lately based on TUG responses. I feel like I got a good deal, but maybe the deals aren't as good anymore.
The process is (was): Book your own week with your home resort and do not deposit it to II. Call the Cruise Exchange department and tell them the week you have and the cruise you want to be on. They called me back about 4 days later with pricing. They gave me about 6 different prices based on category and floor. You can then accept or deny and keep your week to do something else with it.