There are 50 channels,(72mhz air) and around 6 brands. That would mean that the LHS would have to stock around 300 TX and 300 RX crystals. Then we could get into the 75mhz, 27mhz, 50mhz, and 53mhz. As you see it is easier just to order them as customers need them. You could get it from Tower Hobbies with overnight shipping.[8D]