What is the total sales of 'Avery Hi-Liter EverBold Pen Style Fluorescent Highlighters, 4/Pack' in the Central region?
'Avery Hi-Liter EverBold Pen Style Fluorescent Highlighters, 4/Pack' is the "Product Name";
SELECT SUM(T1.Sales) FROM central_superstore AS T1 INNER JOIN product AS T2 ON T1.`Product ID` = T2.`Product ID` WHERE T2.`Product Name` = 'Avery Hi-Liter EverBold Pen Style Fluorescent Highlighters, 4/Pack' AND T2.Region = 'Central'