How much more is the Florida store's computer product unit price than the Texas store?
"Florida" and "Texas" are both the name of State; Computer product refers to Product Name = 'Computers; difference in unit price = Subtract (Unit Price where State = 'Florida', Unit Price where State = 'Texas')
SELECT SUM(CASE WHEN T3.State = 'Florida' THEN T2.`Unit Price` ELSE 0 END) - SUM(CASE WHEN T3.State = 'Texas' THEN T2.`Unit Price` ELSE 0 END) FROM Products AS T1 INNER JOIN `Sales Orders` AS T2 ON T2._ProductID = T1.ProductID INNER JOIN `Store Locations` AS T3 ON T3.StoreID = T2._StoreID WHERE T1.`Product Name` = 'Computers'