Divi Resorts timeshare preview - 7 nights for $599 incl tax.

http://www.experiencedivi.com/preview_packages/index.php

Enjoy 7 nights from $599 including tax at your choice of the Divi Village Golf & Beach Resort in Aruba, the Divi Aruba Phoenix Beach Resort in Aruba, or the Divi Little Bay Beach Resort in St Maarten.

Guests of this preview package will be required to participate in a 60 minute sales presentation during their stay.

$799 gets a 1 BR suite.
These rates are room-only and do not include a meal plan.
Price is total for 2 adults. IIUC, up to 2 children can also be included.

Is this available for the week of March 23, 2013 to March 30, 2013, in St. Martin or Aruba?

From the site when you click on the Reserve Now button:
"This offer applies to travel thru December 20, 2013. Black dates apply."

So keep checking the site later, and maybe the dates will be extended into next year. Or call Divi to inquire.

This offer is valid for travel thru December 22, 2012 & May 1, 2013 - December 15, 2013.