Caribbean Canadians,
Thanks for the info. I did find the real estate listing. Here's the link:
https://www.century21-stmaarten.com/properties/luxury-development-beachfront-land/The listing includes a video with drone footage. The advertising copy implies that the price is $22 million -- it's 8,000 square meters, and it's "priced at $2750 per square meter."
I can't find much info online for "La Guachafita," except for legal documents in Dutch that appear to refer to unpaid taxes.