it doesn't matter if your vehicle is so modified that you could do all of those jobs without even opening your toolbox. when you drive into the service drive and ask them to fix your car, they look up the job in the computer. click the checkbox next to it, and it adds BOOK TIME.
so if the booktime on the valve cover is (just for example) 4hours. and it takes the mechanic 1hour, you will still pay for 4hours.
on the flip side........
mechanics get PAID book time. so if a job pays 1hour, and it takes the mechanic 4hours (which can happen with some jobs that it physically takes longer than booktime. specially with old rustbuckets), then he still only gets paid 1hour.
i've seen a mechanic at a dealership get paid 1/2hour for 2 days of work..............he was chasing an intermittent electrical problem. so if he was getting $24 an hour, that means he only got paid $12 for 2 days of work.
automotive business is a rough business (just like many other service businesses). the mechanics are bitching because they get screwed on work, and the customers are bitching about the repair costs.
as i said earlier. if you don't want to pay those prices, then people need to do their own work. if you don't want to pay for the repair work, then how are the mechanics supposed to get paid to fix your cars??? a business isn't just trying to make enough profit to pay rent. they also have to pay the mechanics. and for alot of the tools (and we're not talking $50. try more like $1,000 $2,000 $3,000 $5,000 $7,000+ for one single tool).
oh and what about warranty??? you want that too don't you??? so you have your buddy fix your car for a case of beer. but if something goes wrong because either he screwed up, or the part was defective then you have to pay again.
but if the shop fixes it, and they screw up the work, then the shop has to pay for the mechanics mistakes and fix your car. and if the part is defective, then we have to fix it again. so suddenly that 4hour job now was twice as long because of a stupid defective part.
overall, there is alot more to automotive repair facilities than people think. there are alot of things that cost money being used that people don't realized.
and the prices also kind of depend on location and business size.
a smaller business in a non-competetive place might have higher prices because they don't have competition. that same place in a location with 20 other shops will have lower prices to be able to compete.
and a smaller or newer shop will also have to make sure they cover their expenses and make enough profit to continue business where a shop that's been there for 20 years and is the size of walmart, has alot more business and more income that they can lower the prices enough to run the little guys out.
sorry if i'm coming across as rude. this isn't so much directed at the original poster, as it is at some of the people that are continuously beating down auto repair shops. having been one of the people that used to complain about shop prices, and now own my own shop i see both sides. which is why i try my best to help people keep the cost down, but at the same time. if i don't pay my bills and expenses, then i won't be around to continue providing quality work.