The one way was $15, so if raised to $20, that will be $40 RT plus taxes. This yr departing Anguilla was $13, we went from the Dutch side no depart tax from the Dutch side, but I think the Fr side depart is $5, so that would make the RT from Marigot $58. GB Express from the airport was $90 + $13 Anquilla depart tax
J&B