Picked one up from Midway at the $250 sale price, $267 w/shipping. The system comprises a 720P security camera with a flexible clamp arm (for attaching to the supplied TX tripod), that plugs into a wifi TX, a pair of tripods and wall wart 12v chargers for the TX and RX. After charging both the TX and RX, the camera's video and power cables are plugged into the TX. I loaded the free target camera app into my Android cellphone, took a walk with the target camera case (a nice one, too). I wanted to see just how far my cellphone alone would pickup the wifi signal from the camera TX, and it worked perfectly to 367 yards, line of sight, the most distance I could find at the time. Here's a pic I had the target camera snap at that distance ...
While at that distance, I turned off the target cam app and wifi, set up the RX, turned it on and aimed it in the direction of the TX, restarted wifi and instantly picked up the target camera image. While I've heard of multiple folks using this target camera system out to 1000 yards, I can only test out to 700 or 800 yards (maybe next week).
The Good - It works very well (so far), it's cheap. The TX and RX are on tripods that can help with rolling ranges and interference. The camera is separate from the TX, unlike other systems where the camera and TX are in the same box - hit the box and kill both.
The Maybe Not So Good - (1) Putting together the system, I couldn't figure out why the RX tripod wouldn't screw into the RX. Answer: someone forgot to tap threads into the TX mount bushing. A call to Caldwell, a return shipping label sent, and 5 days later a new RX. (2) The camera clamp itself is not nearly robust and will fail, as mine did - busted right at the hinge. Truthfully, a camera tripod does work lots better. (3) The tripods are cheap and flexible, but serviceable and not to be trusted in some goodly wind. (4) A ground stake is provided for each tripod to care for wind conditions. Not near enuf in a good wind, better to sand bag or triple stake each tripod.
Wish List - (1) The target camera app is pretty dumb. It can take snap shots as needed, even video (but why?) and allows for sizing bullet groups (again, why?) but it does not do the most important task - show the last bullet strike (blinking). My fix for this is to take an image of each shot (I number each one as image notation is provided) for later review. (2) The 720P resolution is OK, but it would be much better if it was 1080P. I know of one person who retrofitted a 1080P security camera for about $44, so it's doable.
Bottom Line - All in all, at the base sale $250 price point, this target camera system was worth it for me, so far - and *SO* much better than any scope. As with all of these camera systems, and like skylight chronos, we don't wanna shoot them! With the camera in front and off to one side of the target, perhaps a large and angled AR500 plate will help. These security cameras aren't all that expensive, however. I think target cameras are THE way to go for situations where distance and gun scopes can't spot the shots well, or not at all. No mirage or other optical or weather related issues to contend with using spotting scopes, too.