Database: retail_world
Question: What is the difference in number of unit price from Chef Anton's Cajun Seasoning product and Chef Anton's Gumbo Mix product of New Orleans Cajun Delights company.
SQL: SELECT ( SELECT T1.UnitPrice FROM Products AS T1 INNER JOIN Suppliers AS T2 ON T1.SupplierID = T2.SupplierID WHERE T2.CompanyName = 'New Orleans Cajun Delights' AND T1.ProductName LIKE 'Chef Anton%s Cajun Seasoning' ) - ( SELECT T1.UnitPrice FROM Products AS T1 INNER JOIN Suppliers AS T2 ON T1.SupplierID = T2.SupplierID WHERE T2.CompanyName = 'New Orleans Cajun Delights' AND T1.ProductName LIKE 'Chef Anton%s Gumbo Mix' ) AS calu