Buying GPUs

I guess this isn't the right place to put it but what other place would it be best to find a good GPU than a gaming community!

So basically, I'm building a new desktop and well, my budget isnt that high.
Im not looking for like Titan X quality.
Maybe somewhere around the 950 series or some shit.

So what I'm asking for is if you nerds still got your old GPU and wanting to sell it, hmu and I'll see if bargain that shit.

Or suggest a cheap GPU that's online!

Either way works!