Thank you very much for your follows and repeat purchases. If 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. Due to the quick sell-out, we are unable to offer discounts. We appreciate your understanding. As a first-time buyer 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 the first ten days of the month 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 instant 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 product, please contact us before leaving a review.