Building my triangulated 4 link

Sure, that’s true. But for some of us time is more readily available than money. And that’s too simplistic anyway. If you enjoy the work then it’s not just “lost” time. Not to mention the sense of satisfaction you get from learning new skills and doing something yourself.

And, even the RMS kit takes time to install.
My point of view exactly. I’ve never done anything like this, and enjoyed every bit of it. I only worked on it in my time off. That’s why I have this car. I enjoy working on it when I’m not busy.