If you can buy a action cam. There is now great cameras better then mine and still cheaper:
-Thieye T5 = +-120$
-SJ7 Star = +-=199$
These 2 have the same hardware and are Gopro4 black quality no doubt.
For cheaper and older and still better then mine SJcam4000+ there is the:
-Git2 & SJcam5000+ (they are cheaper now cause Sjcam now uses Sj6 & Sj7) SJ6 is just another "cheap" alternative but it's a cheap video quality compared to the SJ7 high end quality
You can get a Git2 for 95$ or the SJcam5000+ (elite) for around 115$.
I strong advice from my knowlodge that there is no better camera now in the price range of the Thieye T5 in quality video & price. SJ7 star only differs because it have a touch screen and also sound quality is a little better (a little). We can still put external mic or mod the internal (bigger) like i did to my SJ4000 (Turnigy2k) one! :P