To spend the complete day there, it will cost you $200-$300 depending on your choice for food and drinks and of course taxi fare and ferry. The day goes past very quickly and often it is better to stay overnight or perhaps a couple of days to get a full appreciation of the island. The last time we were there we stayed a week in a villa and had an amazing time and an SUV was included in the cost of the villa! We do love Shoal Bay East, but Anguilla does have many more interesting spots to discover and enjoy.