BookIt offers 3-night stays for 2 at the All-Inclusive Barcelo Costa in Cancun, Mexico, with prices starting at $528, as provided by Dunhill Travel. (Click on "Check Rates" and "Try Our Lowest Price Calendar" to find these rates.) That's the lowest current rate we could find for this package by $64. Blackout dates and additional fees may apply. Book this travel deal by March 10 for travel through December 31.
Of note, BookIt offers stays in other hotels in or around Cancun with prices starting at $91 per person / per night. Scroll down to see them all.