Write SQL query to solve given problem: What is the original price of the "Black Avery Flip-Chart Easel Binder"?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Sales / (1 - T1.Discount) FROM central_superstore AS T1 INNER JOIN product AS T2 ON T1.`Product ID` = T2.`Product ID` WHERE T2.`Product Name` = 'Blackstonian Pencils'