Gesundheit was borrowed from German, where it literally means "health"; it was formed by a combination of gesund ("healthy") and -heit ("-hood"). Wishing a person good health when they sneezed was traditionally believed to forestall the illness that a sneeze often portends.
While we’re based in Calgary, Canada, due to technology constraints we can only offer one currency to price our products on our website. We price in US dollars because most of our customers are located globally and in the United States so US dollars has been the preference for payment so far. We're a small company but as we continue to grow, creating an additional site that processes payments in Canadian dollars is on our list of initiatives.