I just quoted a small shop today, 6 wifi cameras - but it's on an acreage and they need a wifi boost to hit 1 of the cameras by a shed about 200m away. I'd definitely be interested in one of these as this isn't the first time I've run across this problem when quoting. I typically offer a wireless booster that you plug into a wall, but I don't have much faith in them for long distances.
Let me know how these work please, or if I only need a wireless router.