Remember this is a DIY so its really up to you as there are many different brands. It all depends on the equipment you decide to use and the prices in your country. Heres what Nick and I used.
items we used
Motors/ESC: E300 Propulsion Kit
Flight Controller: NAZA-LITE with GPS
Controller: At least 6 channels
Battery: 4S 2200 mHA
And maybe other small items like Solder Iron/Solder, goop glue, things you may or may not have etc