Our party of 3 came on a Saturday morning around 9am and it was about 1/3 full when we walked in. By the time we left around 10am, it was starting to fill up, but no line ups yet.
The dimsum is $3.2 each, rice is $3.8 and the tea charge is $1.2 per person. We were seriously disappointed by the quality of their food and experience though - very fatty meat, small dishes, little variety in dimsum, lukewarm tea and poor service. Although they have "carts", the variety in their dimsum is limited and tends to be very, very traditional - nothing novel or cool. Their service is poor - very unattentive, bordering on rude and it's next to impossible to go here if you aren't fluent in Chinese.