of course it matters you moron, Hypothetically if you ask some computer guy to come repair your PC would you expect to be charged the same amount of money as what it would cost if a "DELL Certified Technician" came to do the same repairs? of course not jackass!!!! also the things that go along with getting a shop to do work(warranty on work in particular) don't apply to work done by an individual, and besides a mechanic shop doesn't just pay the mechanic, like tnathe says, and bunch of other factors go into the price(materials, time spent, paying mechanic, taxes....etc.) if you can't understand why a backyard tranny job should cost much less than a professional shop doing a tranny job then there is no reason for us to even continue this conversation......YOU my friend are a fool.......