The cost of a real Christmas tree can vary depending on its size and species, but generally, they range from $20 to $100 or more. Smaller trees tend to be less expensive, while larger trees can be quite costly. Some stores may offer discounts or sales during the holiday season, so it's worth checking around to find the best deal. Additionally, it's important to remember that the price doesn't include decorations or a stand, so be sure to budget for those as well.