I just learned that It's Christmas is now available at iTunes. Here is the U.S. link: https://itunes.apple.com/us/album/its-christmas/id579899768. It's pretty much available worldwide with perhaps a few exceptions. I ordered my hard copy CD from the official website.
I just sampled the album at iTunes, and it sounds fantastic to me! There are songs of the season prevalent to Newfoundland and the Maritimes that are not as common elsewhere; those beautiful harmonies that only sisters seem to achieve; and some especially poignant tracks that pull at the heartstrings (which is very typical of them).
A closeup look at the album posted at Twitter:
Steverino