If you charge 20% less than Ikea, does that mean I get less?

No, absolutely not. You actually get more.

Since I am some kind of a hybrid between a meticulous craftsman and a Swiss army knife, I can also do most of the small non-Ikea tasks related to the renovation of a kitchen. That could be smaller changes to plumbing, electrical, and ductwork.

That will not only save you time but also money as you would not need to hire other people for these small jobs.