Or buying a bunch of food and going strait from the checkout to the return area and returning everything for cash (at least in OH stores can't give back food stamps). They then turn around and buy booze with the cash.
Oh you joke, but my hometown (Southern OH, just North of Piketon on US 23) got in a little trouble a couple of years ago for accepting donations to the tune of something like $1000 to make your ticket disappear. Wish I could find a better source...
In my state (Ohio) it's a law that you must be given 48 hours notice before the owner or someone on behalf of your apartment building can enter your apartment. There are exceptions for certain situations, like fire, and possibly your leaking pipes scenario if it was bad enough.
Not 0$/hour, you need to compare "can I do this cheaper myself than paying someone else?" Parts are cheap, labor is expensive. There are many of us who can do the the work. The whole point of knowing these codes is to quickly track down the problem. Also, there are more than a few of us who work on our cars for fun.