I bought a stringer because my local string punks decided they knew better than I did.
I asked for 38 lbs on my Prince Boron (like a POG OS). Racquet tune measured 60. and I wanted 35 on my POG mid - RT measured 50. The 2 jobs cost me $78 in total ( Babolat RPM Team 17)
I just said screw it and got my own stringer - a Klippermate. Not worth fighting with the shop
4 PS 85 StV, 2 PS StV 110, PS Chicago 125 & 110, 3 Bab Aero Origs, 2 KPS88, Donnay X-Blue 99, 2 Snauwaert ATP and 7 Wilson Woodfordes, Hi-Ten Set