I had use of one made by Snap on at London Taxis that was very good .
I have one that cost all of $5 (under £3) through eBay, came from China. It actually works really well, gives a sharp image. The software that came with it allows you to save a picture or a video.
Yes. I think it is the same. The only difference being the trader you highlighted didn't ship to the UK.The one you have shown David is very similar to the one I have, even the little CD looks the same (white and blue).