i work at firestone. dont hold me to the prices (im the guy doing the alignments, not selling them) but as far as i know, they all cost money the first time. We will do an align if you buy tires, at a discount. I think you pay a little more if you want the lifetime, but from that point on, its free. However, you have to watch the wording, it is usually just a lifetime alignment check, i believe if the car needs adjustment, there is extra, because the labor for a check, and an actual align is different.
But, if you dont want to buy tires, you can go in there and buy an alignment with the lifetime deal. It will cost more then a normal align for the first, but you benefit if you have your align checked often.
-Chris