Aja Isaac July 6, 2026 Oral-B Built an Empire on a Brush That Costs $6 to Make. Here Is How DTC Brands Can Stand Out And Steal Buyers. Aja Isaac July 6, 2026 Oral-B charges $150 for a brush that costs $6 to manufacture in Shenzhen - so why are independent DTC brands still leaving that margin on the table?