I have just realised that there are some inescapable extras not included in the BDS price. First is general sales tax of 12.5%. Second is the park fee (a tax) that must be paid at Half Moon Caye - US$30 for visiting the Blue Hole and US$10 for landing on HMC. They push the price up to about US$180, compared with $200-$250 from Ambergris Caye with an hour's more sailing (and fuel). So not so unbelievably cheap after all.
Pretty cheap if you don't go to the BH though - US$150.
Pretty cheap if you don't go to the BH though - US$150.