Our hotel had a revolving restaurant at the top, so for my other half's 40th we thought it would be an ideal place. I can't really remember the cost of dinner, but I think it was about £30 (approx $45?) for the both of us, including cocktails.
It was definitely an experience; the restaurant seemed to jolt for a while, then go backwards and forwards in one place. Eventually we started revolving all the way round and we had excellent nighttime views of the Petronas Towers, KL Tower, all the skyscrapers and pretty lights.
The food was good, personally I wouldn’t say outstanding, but that may have been my dish and taste buds. It’s definitely a place to go for a special occasion, though, for the views and ambience alone.