The cost of postage for a Christmas card will vary depending on several factors. The weight of the card, its size, and the destination country are all factors that can affect the cost of postage. In general, the cost of sending a Christmas card can range from a few cents to a few dollars depending on the specific factors involved. Additionally, some countries may offer special Christmas postage rates or discounts, so it's always a good idea to check with your local post office for the latest information on rates and discounts.