The link in the first post shows a BBC news report of lots of battery hens being rehomed.
I used to buy 'Free Range' eggs, but wasn't really sure what I was getting, as they were not 'Soil Association' which are the ones here (UK) that enforce the best standards. So now I keep my own. We spent quite a lot setting up, as we didn't fancy the DIY route, so the average cost/egg was 60p at the end of the first year (a big improvement on £35/egg at the end of the first week). It's now 17p/egg (7p for food/replacement hens etc, 10p for the house and run).

Supermarket labelling is so confusing. 'Organic eggs' doesn't mean free range, it just means fed on organically grown feeds.