Currency in Saint Pierre and Miquelon to euro (EUR €). For 10 US dollars you can get 9.22 euros. For 100 US dollars you can get 92.2 euros. And the other way: For 10 euros you can get 11.1 US dollars.
And if the trip plans are simply for a given region of the world, then maybe it will come out cheaper than in Saint Pierre and Miquelon in nearby countries? See prices in: Iceland, The Bahamas, Turks and Caicos Islands, Saint Barthélemy, and Anguilla.