susangg: at the time you bought your "condos" the alien landholders license requirement applied to any purchase of 10 acres or more in the country or 1/2 acre in town. Later the law was changed to additionally apply to ANY purchase on the cayes.
The add-on sales tax of 8% applies to food prepared in restaurants, and professional services among other categories. Your attorney should have charged that as a separate item on youir invoice... or was that before the sales tax went into effect?
Yes, the real estate agent does pay a business income tax as a percentage of his/her gross receipts.
Although you may not be directly concerned with the cost of doing business, you should be interested in the sucess and competency of your agent... you would't want representation from someone who doesn't even have a "real" business would you?
I'm sure you can find someone who will happily "list" your property for a lower commission rate that you will find acceptable. You might check with the taximen who are always trying to hustle real estate.