Apparently, there are some Chinese websites that are listing the device at 4999 Yuan, which is about $800. That price would be considered a ripoff if you were planning to buy any top of the line device off-contract. But for a flip-phone with a 3.3-inch 320x480 display, 1GB of RAM, a quad-core processor, 5MP camera, 1500mAh battery, and Android 4.1, that could be considered highway robbery.
Of course, there is almost no chance that the Hennessy will make it out of Asian markets, so we don't really need to worry about the price here in the U.S. Still, if you were considering grabbing one unlocked as a joke, you might want to reconsider.