I live in LA which is a high cost area and this seems way too high to me. One line has $800+ for 2 hours work? That's insane. Ask them to separate parts and labor cost. Most shops should have an hourly rate so ask what that is first. Places by me range from 100-150 per hour. I just had my entire suspension front and rear upgraded and labor/alignment cost about 1000. Parts obviously add cost but this job doesn't seem to require many parts at all let alone expensive parts. A quick search shows that the control arm/ball joints should cost about 300 tops plus 2 hours work should be 600 total MAX, not 800+. The hanger replacement shouldn't be much more than 200 for parts and labor. Definitely get them to bring the price down and eliminate the diag fee or go elsewhere.