Before getting taxi, verify that what the rate is (set by government ?). I believe from Foxxy's Taboo to Great Harbor, it is $10 per person, each way.

One driver, who made all 8 of us very nervous, overcharged us by $2 per person ($16 one way). After dinner, I found another taxi which did not try to overcharge us AND much more cautious.

BTW, this is probably only time a BVI Taxi driver has overcharged me and my groups (18 weeks in year past 3 years). Most are friendly and courtesous.