I bought a GoPro a few years back. I have hundreds of hours of cycling, hockey, motorcycle videos sitting on my computer. I doubt I've watched more than a few minutes worth of them, and it eventually ended up in a box somewhere unused.
About the only thing I have plans of using it on now is Autocross racing, but that is more to analyze what I'm doing wrong than for any sort of entertainment value. As others have stated, unless you have good solid plans of using the video, it is more of a hassle than it is worth.
I got mine from the GoPro recertified store on eBay, straight from the company. They have some good deals on there from time to time:
GoPro Certified Refurbished Cameras | eBay Stores