Am on the search for quality restaurants in Ipswich, as it has previously been all about fast food.
Komiya is an amazing Japanese kiosk in the foodcourt at Riverlink. They make fresh sushi, more traditional- with the rice around the outside. Try the crab and avo!
They also make full meals, which are available to be taken home. A great alternative to pizzas or other cheap takeaway!
The staff are always lovely and polite and will explain anything you don't understand.

Approximate cost: $5-20