Price up??? What the h*ll is that.
Most ppl in the english speaking world call that "mark up".
If dude's charging $10 labor, $4 string mark up is acceptable.
I charge $20 labor and no string mark up.
$20 labor whether you bring your own string or I provide it.
Blade 98 18x20 x3 - Babolat VS Team 17g @ 50lbs M's/Signum Pro Poly Plasma 17g @ 46lbs X's (5% pre stretch)-USRSA Certified Stringer-Babolat Star 5