I am just look at $$$ and ways to shave a few off with diy builds.
I buy ALL generic parts (screws, terminators, gold-plated IC sockets etc etc etc) cheap from China, cutting the middlemen, and use recycled cases wherever I can (lots of them around where I live).
Also, I do all metalwork myself. It's cheaper but takes more time (so might not be feasible for everybody). I don't need nor want DIY units to have engraved etc front panels and rather spend a bit more on quality components (ICs, caps etc etc) for the actual circuitry.
P.S.
1k6 for iron is crazy expensive...