Disappointing. At first I thought it was due to duff Kindles (I returned two units which had page-turn buttons that wouldn't 'spring up' properly, making it impossible to use whilst in the case), even once I got a kindle with properly working page-turn buttons it still was very hard to press them while the cover was on.
Another review gave me a top tip of placing an old store / reward card behind the kindle (i.e. credit card style with no relief-style text) to lift the unit a tiny bit away from the cover so that the buttons could travel fully. Worked a charm!! I've ordered a replacement cover to see if that's any better, but I have a feeling it's just a fault in the very tight design - over the course of 3 kindles in a single case, they all had varying degrees of success - sometimes only a single button was hard to press; sometimes only a single button would click/depress properly!!
3 Stars as otherwise I think the case is decent; looks nice and the light works well and runs off the kindle's own power. Just a shame that it's SO snug that it's quite easy to get one which doesn't quite fit your kindle properly!!