I bought the same one a few weeks ago...slightly used from ebay for $35...I use it to make sure camera is where I want it...also, some of my cams are in locations that are not quick in and out, so I only check them when I hunt, I'll view the cards with this while on stand.
It's pretty easy to use, plus it comes with cables if you need them...Only issue I have, is some files don't open...gives me a decoding error. Ever had that happen? It only happens when I pull the card from one of my older Simmons cams. So I think it has to do with that cameras particular AVI format, other AVI files open just fine from my other cams. I'll replace that camera with a newer one soon though.
Still a great device and it fits nicely in my daypack without taking up a lot of room.