Had you signed up for e-mail notification of last-minute deals? Just curious because I did about 3 years ago, and this is the first time I have actually been getting any. I received a similar offer for a Pacific Panama Canal cruise at a unbelieveable price that leaves before the end of April.
It's killing me because I could actually go on that short of notice; the money is the only thing keeping me home. We keep our passports current and have a special closet just for our "cruise stuff." I could conceivably be ready to leave tomorrow.
I can only assume they aren't filling the ships and/or they are having lots of last minute cancellations.