Here's a personal prime example of DIY saving time & money.
A Friday afternoon. Wife, kids & I headed to in-laws for dinner in our minivan.
Stop at store, there's a "pop" and the brake pedal goes to the floor. Busted a front flex hose. Rear brakes do still work, so drive ½ mile to in-laws. Buy a new hose and brake fluid. Before dinner is ready the car is repaired. Cost $25.
If not DIY it would have been:
Tow to garage ($). They'll check it our Monday or Tuesday. Quote for brake job ($). They'll maybe have it done by the end of the week, maybe next week.
So one hour and $25 vs two weeks and $200.

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