Found a picture of the GT1 approved Tamiya ESC/motor combo. Not yet released, was just shown at the Tokyo hobby show. Price looks be around $140 overseas and $170 in the US. That's just for the ESC, no idea on the motor yet.
Also found the GT1 only approved tires, the B3 pre-mounts. Wait for the price....MSRP $69 per set! Ouch, but not surprising.
Hey at least the batteries are open to any hard case lipo!
Combine that with the cost of a TRF417 kit ($520) and you got some serious money to race one class, for one race...