$200 isn't anything if they really work. If it saved 2 alignments, you would nearly pay for them. If it saves the arms, then much better.
Everyone knows there is a premature wear issue even running stock tires on GM HD trucks. I can see the idea behind how these work IF the premature failure is caused by the front/back flex at the arms.
Sounds like someone like Trail Duty could check with them on a group buy for some of us to try out and see if they work.
