Unfortunately, there's only one customer review. I looked at the video and it looks ok, but the "focus on the card" part looks a little hokey.
Man, does it ever. Peek wallets in general are pretty hokey, but that card thing is just plain silly, imho. It SCREAMS bought-in-a-magic-shop gimmick.
The best mentalism, like the best magic, uses real-world objects (or no objects at all). Even if something like, say, Die-Cipher is completely examinable, it still LOOKS like something you got at a magic shop. It becomes an interesting puzzle at best, nothing more.