I got one of the $1.58 cases and it does not fit properly, but maybe it was damaged through transport. The case is so thin that it offers 0 protection, but it truly adds nothing to the iphone 5.
However, I don't like the plastic-ky feel of it, although it's better than silicon which attracts lint. I do absolutely recommend not buying the Pinlo since it is the epitome of marketing gall and gumption. These guys charging so much for a $1 case is highway robbery. I'd rather take my chances ordering 20 times from ebay before I got a Pinlo case.