Don't believe the sellers who say targeted traffic and that it'll bring sales. 99% of anything cheap is bullshit used for iframe ad clicks. I personally just use some of the traffic from BHW to gain ad clicks on my own sites using hidden iframe scripts. I had to switch over to FB / TWT campaigns to gain sales traffic from my clientele while blending in only premium provider traffic (he has a shitty customer support service now so sometimes campaigns get cut off early until I message him).
I can tell you who to avoid if you want quality traffic.
Maxvisits is hands down only good for providing untrackable unique ips and high bounce rates, don't believe his lies about "sales" "clicks" as its just a hype up to protect his face from your angry fists.
Instavisits traffic is not targeted, I get more targeted traffic from maxvisits than them.
Expressvisits goes afk emo for long periods of time but their traffic is amazingly good for ad clicks (i use ifram scripts but their ips are the best stats).
WebTrafficGeeks is ok but sometimes their delivery method is really screwed up and you won't get the traffic from the niche specified. They are still good to use for gaining ad clicks (iframe script).
You can call me 100% biased as I can't go on 1 post dummy accounts saying "awesome traffic" as I see recently on 1 BST traffic seller or the thousands of requests they get and use as their "happy" customers. I see beyond the sales tactics, and when something says targeted but yet they come off the explain the crappy stats as cold traffic how they fuck can traffic be targeted and cold? Country targeted yes, but beyond that they claim its also niche targeted which is where I stop my purchase from now on. I don't believe niche targeted cheap traffic sellers, as in anything under $10 cpm is cheap shit that I wouldn't even buy from DNTX or ZeroPark (and both are horrible at these bid ranges for popular niches).
