I'm currently running a mamba max ESC with a Castle 6900Kv motor, Sky Lipo 3300 Mah 20C. Its way more than fast enough for me, and I never see a lack of punch, it will wheelie on demand. Still running the plastic gears, and the slipper is set as it was when it came out of the box. I did upgrade to the traxxas shafts, as I broke one of the stock ones with the brushed motor.
As for prices:
$60.00 for the Mamba combo used
$15.00 for the Sky Lipo
$27.00 - $90.00 for a Lipo charger
$35.00 for power supply
AE T4, SC10 2WD. B4, B44.1, Kyosho SCRT, Ofna MBX+1 Pro, Ofna Comp E-Scale, Hyper ST Pro E-conversion Truggy, TC4 X2, Bolink pan car.
Hobbypartz.com & Tekin ftw.....