Thank you very much for your follows and repeat purchases. In the unlikely event that you are not satisfied, we offer returns and exchanges within 30 days of receiving the product. We hope you can purchase with peace of mind. Since items sell out quickly, we are unable to offer discounts. We appreciate your understanding. As a first-time purchase bonus, we are offering an additional ball service. We also have repeat purchase benefits. Please take advantage of this opportunity. These balls were opened in early December and used for about 3 weeks in women's practice on a hard court. They are generally scuffed, but the air pressure is good, so they are recommended for practice with others. We will check the air pressure and package them carefully, so please use them with confidence. We will respond immediately to immediate purchases. We have about 200 balls in stock. If you purchase a large quantity, we will offer a significant discount, so please contact us before purchasing. In the unlikely event that you need to return the item, please contact us before leaving a review.