I will give you an example based on my prices .
Take for example a 18 gauge 3 conductor extension cord. Lets say it weighs 10 lbs- (my prices as is )

$0.80x10lbs= $8

If you strip it
Lets say it has a copper recovery rate of 33%



0.33x10lbs= 3.3 lbs of Bare Bright

Bare bright= $2.85 x 3.3= $9.40

$9.40-$8= $1.40

A gain of $1.40

This would be good if stripping wasnt labor intensive with even commercial strippers.

If you had a granulator that would be a different story