Most people performing string jobs at the local clubs or shops are performed by people who do not know how to play the sport or are recreation players. I have been competing badminton for many years and have travel across the country to competed in grand prix tournaments.
My prices are very reasonable and are highly recommended.
For example: Yonex BG65 is $30 (including labor and strings).
If you have your own strings, the labor is only $20.
Quick turnaround time... Contact me for more prices.