It is very difficult to give an exact price as some variables need to be considered. Is it a replacement door or a new construction? Must we remove the existing door? Do we have to rebuild the frame and cover with aluminum?
What is the headroom above the door (to determine what type of lift)? Is there a bedroom above the garage (door insulation and noise reducing mechanism)? Do you need any extra accessories with your electric operator? What use will you make of your garage? Will you park your cars in it? Or maybe store things in it? Or maybe, it will be a workshop or a recreational room for your children.
These are all questions that must be answered in order to determine your specific needs. Besides, isn't your garage door an important investment for you?