Sizzix Big Shot dies are available online at Sizzix.com. There are many websites, such as HSN.com and Joann.com, that carry dies and related products. Many larger online marketplaces such as Amazon.com and eBay.com also feature dies and other Sizzix accessories.
The company's website features numerous accessories and the online catalog offers the largest selection of shape-cutting dies. Amazon.com offers the dies in their "craft supplies" section. Overstock.com lists Sizzix dies in their "Crafts-Sewing" section.
The price range from Sizzix.com varies greatly depending how many dies are included in each set. Sizzix products are highly rated on all of the websites which carry their products.