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.
Chef Anton's Cajun Seasoning' AND 'Chef Anton''s Gumbo Mix' are ProductName; 'New Orleans Cajun Delights' is a CompanyName; calculation = SUBTRACT(UnitPrice where ProductName = 'Chef Anton's Cajun Seasoning', UnitPrice where ProductName = 'Chef Anton''s Gumbo Mix')
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