Mandrel bending versus regular

Agreed, Adam.

The price difference between a Press Bender and a Mandrel Bender are night and day.

Press Bender:
http://www.gesusa.com/BendPak-1502BA-302-Digital-Pipe-Bender-p/102509.htm

Mandrel Bender:
http://www.bii1.com/images/rotarty-draw-benders/mb-350-large.jpg

The price difference is usually around $15-$20,000 Dollars.

Most muffler shops hate gearheads that come in and ask if they can do Mandrel Bending cause they know they are about to lose a sale!