Very widespread, it is not, unfortunately. In the mobile phone sector, there were some years ago from Palm trying to make inductive charging standard. But has not really worked out so, or if you have a Palm phone with Touchstone in operation? ;-)
Now it is trying again with its new Nokia Windows Phone 8 devices. Since I have so one that natively supports inductive charging, I reluctantly bought this pallet.
You get very little for your money: The pallet, a cable and a power adapter. Plus, there's a box and a couple of pieces of paper for manual, warranty, etc. But one has then spent about 55 euros as in my case. That hurts, when you think about the presumed material value ...
The function is very simple: You put the three parts delivered (can go wrong you nothing, because at both ends of the cable plugs vary in size) together and then plugged the power adapter into an electrical outlet. From then you need put his phone only to the pallet and it is charged. How long it will take (eg the Lumia 920) I can not say because I always put the phone in the evening on the pallet, which adorns my nightstand.
A device fitted to mobile phone silicone case does not interfere with the shop the way. What is a bit stupid, is the sound ("pling") if you put the phone on the pallet, and that the display lights then. But that seems to be Windows Phone-typical. Because if you want to charge the phone with a power supply, the same thing happened. Therefore does not lead to devaluation of the pallet.
In summary, I can say that I got exactly what I imagined. I'm totally satisfied and would buy it again. The price, well, so this is as an early adopter. :-) In half a year, such a thing may cost only 10 euros.