Trying to figure the cost of a day trip for an adult from St. Martin to Anguilla. Here is what I have:

US$20 pp to Anguilla from Marigot, St Martin
US$5 pp departure tax leaving St. Martin
US$20 pp from Anguilla to Marigot, St Martin
US$5 departure tax leaving Anguilla
US$3 security fee leaving Anguilla

Total US$53 pp. for boat transportation/taxes/security. Plus spending money for taxi, lunch, etc. Is that right or did I miss anything?