I have three, housed in an eglu. As pets go, they're very low maintenance, the eggs taste great, and they're a lot of fun. They WILL trash your garden, so fence off an area for them so they don't wreck everything else.
The eglu is very expensive but very low maintenance – we jetwash it once a month, and empty the poo tray out twice a week. The poo makes an excellent compost.
As well as layers' pellets, we feed ours on veg peelings, leftover pasta, bread and grass clippings.
Just make sure to lock them away before it gets dark, or Mr Fox will have them.
Lots of good advice on the eglu owners' forum if you're interested…