Wire harness building materials

Went looking for some spiral cable wrap to build a few simple
wiring harnesses. ISTR it was pennies per foot some years ago,
so I expected dimes per foot now.

Turns out it's dollars per foot for the spiral stuff, but slit
corrugated hose is much cheaper, roughly what I expected for spiral.

Anybody have a clue why? The convoluted  material looks a lot
slower to make. I tend to think it's inferior mechanically,
and certainly is bulkier.

Thanks for reading, and any ideas...

bob prohaska