You can get a lifetime 4-wheel alignment from Firestone for $109. I got one and had it aligned 3 times so it's paid off. Just make sure that you get it aligned perfectly. The first 2 alignments for me were off, so I wore out (cupping) the inside shoulders of my Bridgestone Potenza S-02s. By the way, I'm extremely happy with those tires...
"When I see an accident, I put my foot down--HARD--because I know everyone else is lifting his."