Prices to balance your tires on a gps9700 differ widely from shop to shop.
I called about 6 shops near my house that use this machine (including the MB dealer), and the prices ranged from $10 - $50 per wheel.
Penske Mercedes Benz in West Covina, California charged me $14 / wheel.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".