It arrived today. As vertigo said, it was shipped in a thin packing envelope with virtually no protection. As a result, the areas by the power and volume cutouts were slightly indented. However, I was able to get the case on the phone just fine and the structure of the phone seems to keep the dented sections level with the rest of the case.
I agree with the other posters who have used this case. It definitely improves grip, but the seams around the edges are annoying. There is no lip, but the edge of the case is raised just a hair beyond the screen, so my fingers still hit the case when I swipe. It does look sleek and the transparent black one does make the back of the phone look like the dark grey it should have been (thanks Apple), so for under $5 I won't complain about its shortcomings. Given how thin this case is, it will provide no protection for anything other than scratches, so I wouldn't pay more than the $5 I did pay for it.
This will make a nice supplement to my leather case for when I want to show the form of the phone off.
You ordered the black one from the eBay seller? Would you post some photos with it on the phone of the back and maybe an angle at the front? I'm interested in how this looks.