Cruise.com via ShermansCruise offers a Princess Cruises 7-Night Western Caribbean Cruise for Two with prices starting from $900. (On the ShermansCruise landing page, scroll to the bottom and click "Book Now" next to the March 30 sailing date; we found lower rates during booking.) That's the lowest price we could find by $50. This roundtrip cruise aboard the Caribbean Princess departs from Fort Lauderdale, FL, on March 30. Book this travel deal by February 28.