My dishwasher hose was leaking at the shut-off valve and I called Same Day to come seal it off for me. They scheduled for the next day (which was fine, I called at 4pm and the leak was extremely slow) and sealed up around the valve. The charge was $145 but I don't think that's unreasonable for in-home service. It's not like I'd be able to repair the thing myself.
Unfortunately the next day I noticed the leak was still going, though much slower than before. The guy came out 2 hours after I called, and this time replace the tubing. He let me know the reason for the leak was because the tube was supposed to have a metal bit inside to keep the plastic firm against the shut-off valve, but this particular hose was installed with just plastic. The replacement for the tube and this particular visit was no extra cost, it was just included in the $145 I had already paid.
No leaks since then, and I'm sure I'd use these guys again if I ever have another plumbing problem.