Profit margins in the ice cream store business can vary widely depending on a number of factors, including the location of the store, the type of products being sold, and the operating costs of the business. Some ice cream stores may have profit margins as low as 5%, while others may have margins of 20% or more. It is difficult to provide a specific average profit margin for ice cream stores as a whole, as the profitability of a particular store can be influenced by so many variables. That being said, it is generally considered a good idea for businesses to aim for profit margins of at least 10-15% in order to remain financially viable in the long term.