Many online stores offer invertase for sale, including Amazon and Alibaba. Local specialty shops that sell baking products often have invertase available for sale. One example includes candy makers, such as Burke Candy in Milwaukee.
Based on your scheduling needs, there are several ways to buy invertase. In a rush, you can find a local specialty shop that sells bakery ingredients. Otherwise, compare prices on Amazon and Alibaba to save on the product and shipping costs. If you want to purchase the invertase in bulk quantities, consider options available on Alibaba; This seller allows you to buy products directly from manufacturers.