The prices for Christmas trees at Home Depot can vary depending on the size, quality, and type of tree. Typically, real trees can range from $20 to $100 or more, while artificial trees can range from $50 to $400 or more. It is always best to check the store's website or visit the store in person to find the exact pricing for the tree you are looking for. Additionally, Home Depot often offers discounts and sales during the holiday season, so it's worth checking for any deals before making a purchase.