Front End Alignment Los Angeles Area?

When I left the underside of the alignment rack people were having conniptions because prices on a thrust alignment was going from $50 to $60.
I paid $125 to have my 12, 1/2 ton 2wd done, I then bought a pair of Michelin tires for the front and the inner edges of both front tires were shot in less than 15k miles.not happy.
I did recently check the parts and all ball joints tie rods etc are still tight, no wear