Everytime a new model of a racket comes out, the older model drops in price. An example is liquidmetal radical dropped when flexpoint came out, and basiclly every other racket. So when the new Aero Drive rackets came out, why didn't the Pure Drives drop in price. Are they like not replacing the PD, but adding more rackets to the PD "set", if that makes sense. So what is the reason the PD haven't gone down in price?