Labor Rates

[SAMIAM]

Always serviced at Cantins but starting to wonder about labor rates
Went in friday for lower ball joints on my Avalanche
Dropped it off at 1pm and they called my to pick up at 4:30....total of 3.5 hours
Parts $176.86
Labor $910.44
Shop supplies $99.65
Total $1,186.95
Included alignment but still seems excessive....that's almost $300 hourly rate
Am I missing something?....maybe had two techs doing the job?
Was expecting $400 bill $500 tops