- Title: "Sales Differentiation" Strategy - Author: Direct Publishing - Price: 3,278 yen (tax included) - Content: Explains how sales representatives can differentiate themselves from other salespeople in the same industry. A business book explaining concrete strategies for sales differentiation. This is a members-only book, a rare item not sold in bookstores. Only opened. Brand new, unused condition. Please understand that this item has been stored at home. Please refrain from purchasing if you are overly concerned about details.