Shopify never used to provide a cost price for a product sold. This App was the result. Over time it became the only reliable way to generate reports on the cost of goods sold. It also allows the merchant complete control over past, present, and future values of the cost price of any SKU. With this App, doing accounting reports not possible in Shopify becomes available to the merchant. Most reports are available as easy-to-use CSV files for compatibility with all accounting packages.