OMG is a very good choice for lunch as their price is very similar to other HK Cafe in the area. However, if you do decide to come here for dinner, be prepared to spend around $20 per person at least for very typical food.
I come to OMG mainly for lunch, because of their wide selection of choices on the menu, at around $9 per person, you have bread and soup to start, your choice of the main course and a drink. Their food is properly the prettiest when compared to other HK Cafe in the area and they also taste very good. My personal favorite is the smoked salmon pasta with cream sauce.
If you want a quick decent lunch at a reasonable price range, OMG is a very good option! Dinner, maybe not so much.