The lug nut for our trucks are not cheap at all. Last time I had to get a new set (misplaced mine when I change to new wheel), and it cost about $12 to $20 per nut depends on which dealership you go to. So take good care of them! Regarding having other people torque your wheels, I always stand by to the shop floor to make sure they don't do anything stupid. I make sure they hand started the thread, then end with a torque wrench.