The $138 HK dinner price roughly equates to $18 US and that price is good only if you start eating before 6pm. It keeps going up if you want to eat later. The highest price is still only $168 HK or roughly $22 US, which runs between 7 - 9:30pm.
They also have a special dinner price for senior citizens and children and it is $98 HK or a little less than $13 US. As well, they have a lunch buffet (Central location only!) and the prices for that are $110 HK or $14 US for an Adult and $78 HK or $10 US for children and senior citizens. The good thing here is that the menu is the exact same as the dinner menu.
The restaurant is called YumAsian and it has two locations.
Note: Reservations must be made
1) Shop 1, G/F, Car Po Commercial Bldg., 18-20 Lyndhurst Terrace, Central
2) 10/F, CTMA Centre, 1 Sai Yeung Choi Street, Mong Kok