So ordered one of these at the same time I order my expo, mostly because it was cheap, and I wanted to make sure I had something when to protect it when I received my Expo.
The charges, ... work, they seem to be much slower at charging the expo, but if you leave it over night, it will eventually fully charge the battery. I keep them in my laptop back as a spare. The USB cable is handy, works and is recognized in windows 7, though still only use it as a back up.
The screen protector is a bit thick and wears fast.There are marks evident on the screen of my movements on the titanium menu, though it does the job for now.
The case...... was really great the first few days. Covers everything it can while doing a nice job of rounding and smoothing around openings. I have since cracked one of the tracks that connects the two halves, though it still slides smoothly, just have to make sure its aliened well before closing. The rubber case itself, which was stiff at first, is now ply-able, the only main issue I have with that is the thin run along the edge of the screen moves around a bit when using the device. It has however, taken the impact of two separate drops and come out like a champ. So I can't really complain.
All in all.... the only thing I really was looking for was a temporary case until I could find another, and a screen protector. For that I got a spare usb cable, wall charger and a car charger. Like Jose said, the chargers are not UL listed, so I don't use them on a regular basis.
For 6 bucks, I'm really quite surprised. A good, but temporary fix to last a few months.