Just like the semi-precious mineral globes a few years ago, and Galilean thermometers, these things are all over the place in China. Lots of little street shops and hotel kiosks set up to make them on the spot from photos you provide, or 3D renderings after a short wait. Neat software (I've got some for my CNC machine). The display bases are a few bucks, but the novelty of them wears off pretty quickly, and the batteries usually die from sitting, as opposed to running. I've got a bunch of crystals with company logos, models of the Pearl Tower in Shanghai, but I probably couldn't find them since the move. They do look cool, as long as you don't touch them (they're fingerprint magnets)!
The 968 idea is definitely the coolest one so far, and the only one I'd pay for.