No, you don't understand. Mine is converted to brushless and I'll include all the stock electronics. It would take you $300+ to build the truck I have. I'm just sayin. It's a steal of a deal IMO. You would just need a Spektrum transmitter to use it as it sits because all of the electronics are swapped out. The speed control, motor, receiver, servo. The Rx alone is $100 brand new. You would have the option to reinstall all of the stock electronics and just hold on to the upgraded electronics if you ever got a Spektrum Tx.
just to clarify, you don't NEED Spektrum to run brushless. You just need a Spektrum Tx to use the Spektrum Rx that comes with the truck.