True, but have you seen what a 304 stainless capable (and I'm guessing an aluminum also as is the case with these systems) mandrel tubing bender CO$T$?!?!?
There
IS a reason why most even good exhaust shops do not have one.
It would take a LONG TIME to recoup THAT expense!!!
But, yes, there is labor time/cost then saved on less welds, and a slightly 'cleaner' looking finished product due to fewer welds (IF the welds bother you, and don't actually
add to the beauty of the system in your eyes.
).