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Got my done at a private clinic at Mount Elizabeth Medical Centre, the whole process is quite simple and fast. Costed about 3k. Drop them an inquiry online, they call back to book the first consultation appointment. When down with my wife for consultation, and booked the actual day surgery a week later. One the surgery day, the whole surgery process took around 30-35 mins, in an out of the clinic in around 1 hour.
And yes during the surgery you will feel that they are pulling on the ball to get to the duct, personally hated that sensation.
Just take note you cannot bath for the first 24 hours and remember to wear tight underwear for the first two days. Personally did not experiences pain on the ball or the surgery site. Just do not do any physically exerting activities after the surgery to prevent the stitches from becoming undone.