Thank you for your many follows and repeat purchases. In the unlikely event that you are not satisfied, we will offer a refund or exchange within 30 days of product arrival, even for reasons of customer convenience. We hope you can purchase with peace of mind. As these sell out immediately, we are unable to offer discounts. We appreciate your understanding. As an introductory offer, we are providing an additional service of balls. We also have repeat customer benefits. Please take advantage of this opportunity. These are balls that were opened in early January and used for 3 days in women's practice on a hard court. The felt has some scuffing as shown in the image, but is in relatively clean condition. The air pressure has decreased somewhat, but they are recommended for partner practice, serve practice, and feeding practice where many balls are used. We believe they can be widely used by children, women, and adults, as well as from beginners to intermediate players. We will respond promptly even if you purchase immediately. We have approximately 200 balls in stock. If you purchase a large quantity, we will offer a significant discount, so please contact us before purchasing ♪