Do you mean this one?
http://www.target.com/p/playstation-4-dualshock-controller-charging-station/-/A-15091202#prodSlot=medium_1_2&term=PS4 controller charger
If so than they are pretty easy to find. We have a few of them at work and I've seen them in other stores.
Bet with Adamblaziken:
I bet that on launch the Nintendo Switch will have no built in in-game voice chat. He bets that it will. The winner gets six months of avatar control over the other user.