Well an example would be on my SRT-4, they had qouted me $69.99, and I ended up paying $130.00 just because I have adjustable camber bolts and adjustable struts. For my Duramax I was qouted $69.99 over the phone and they charged an extra $40 because it has 20 inch wheels. Go to their website and there is a $10 off coupon. They do good work, but get you everywhere they can.