Police are looking for three men who robbed the Bay View Four Square just before 7pm on Sunday.
Two men entered the store just prior to closing time armed with weapons, one of which was a cricket bat.
After threatening the shop worker the men took several hundred dollars from the store till before running to a waiting vehicle driven by a third man.
Both men concealed their faces using bandannas.
They were described as Mäori in their mid-twenties.