been reading as much as I can the past couple of weeks on Rockets and rocket motors. I see the belief that reloading is less expensive than solid motors. My mind also keeps saying that if you lose the rocket, you lose the motor and if the motor is a RMS then the expense shoots up (no pun intended) rather quickly. When is the chance of rocket loss lowered to make the expense difference something worth chancing? Other than cost, what other advantages are there to using a RMS in a rocket?