Which control arms are bent? I know that the rear suspension has 2 control arms (front and rear). The rear rear control arms are significantly cheaper than the rear front.
After being towed on a flatbed, my suspension was WAY off. Turned out that the tow company had ratcheted down my car using my rear rear control arms, and bent them significantly. I had them replaced at no charge, and a free alignment done, but I just thought I'd mention this to see if you may have the same problem.
At first my mechanic wasn't sure if that was the problem because both were bent at the same angle, and it was tough to tell.
I had to go to a dealer that had the part in stock and look at it to verify that it was bent.
Good luck with it!
- Zack