This thing was missing for quite a while and has a poor reputation over at the lighted version because they have determined that stress from the Kindle's movement causes the fasteners to crack. The solution is Velcro to the back of the Kindle to stop movement.
Not much case for $35.
I got a remarkable
leather case at eBay, many colors also, which uses the slide in frame method. Looks like the price has gone up $3 but they are still less that $15 delivered and fits like a glove.