Video: https://www.youtube.com/watch?v=jT14Mn_8_Rc
Total cost: $394
Parts:
HJ450 Frame
Naza M-V2 w/ GPS and PMU
$159 – eBay: http://www.ebay.com/itm/DJI-NAZA-M-V2-Multi-Rotor-Autopilot-Flight-Controller-with-GPS-PMU-LED-/361267124389
$160 Amazon: https://www.amazon.com/gp/product/B00PA7W380
Spektrum DX7s 2.4 GHz TX
$100 eBay: http://www.ebay.com/itm/Spektrum-dx7-transmitter-2-4ghz-Dsm-Technology-/322395396940
Spekrtum AR8000 2.4 GHz RX
$57 – eBay: http://www.ebay.com/itm/NEW-AR8000-2-4GHz-DSMX-8-Channel-Receiver-Spektrum-Dx7-Dx8-Dx9-Dx18-/291964399694
Hobby King 30 Amp ESCs (4)
$44 – Hobby King: https://hobbyking.com/en_us/hobby-king-30a-esc-3a-ubec.html
$44 – Amazon: https://www.amazon.com/gp/product/B00M90WWNC
2217-08 1100kV Motors (4)
$58 – RobotShop: http://www.robotshop.com/en/uav-brushless-motor-a2208-17-1100kv.html