Staunton St, turn left on escalator with a view to the Peak, just beyond Watsons Wine. Out door barber. $40HKD.
With the money you have saved, buy a good bottle of red from Watsons. Allain Graillot Crozes Hermitage 2005 or Voyager Estate Cabernet Merlot 2003. $180 & 197 HKD respectively. They are $60AUD & $45AUD in Oz at the moment.
Cheaper for your kids too- Chinese Army style $25HKD.