My goal with this kitchen makeover originally was to do everything I could myself except for the floor refinishing (I have no interest in learning to use a floor sander!) That changed when we added the countertop project of course.
We did know that some plumbing was needed. The previous previous owners did a poor job of retro-fitting the plumbing when they added a dishwasher. We needed to remove the old pipe it's improperly placed junction and put in new pipe with a properly located junction for drainage of sink and dishwasher. We'd called a plumber, heard back once, but not to our reply message asking about price and scheduling. So, off to the plumbing supply store!
DH always thought he could do it, but we didn't have a pipe wrench. Turns out they cost about $13 and our neighbor (Mr. Tool) had one as well. Good, since we needed two as it turned out.
The cost of the supplies? Just about $50 including the wrench which can be used on other projects.