It's not always that easy. In my case we were moving to a new country. It was very hard to find English speaking tradespeople and the ones we did find told us that they can do it in 3 weeks earliest. So I had to either work as a dishwasher for 3 weeks (we have 2 kids) or connect the dishwasher myself, which took me a whole day and many trips to the hardware store. I still think I did the right thing.