Wish I'd been on Mumsnet earlier today. Come on for first time today, this evening, and found all these amazing controversial threads!
Haven't managed to wade through the 18 pages of arguments, but I'm completely in agreement with the OP.
I'm a single mother, studying, with limited income. Regardless, I would never buy products that weren't free range at the very least. That includes not buying things like Jaffa Cakes because the eggs used in them are from battery hens.
I think it's bollocks that people say that they can't afford to feed their families if they buy free range etc. It's all a matter of priorities and using ingredients properly. A chicken can be used for a roast, then the remaining meat can be picked off and used in sandwiches, stir-fries etc. The bird can be boiled, the stock used for soups or risottos. Furthermore, I can't abide the argument that someone 'can't afford to buy free-range meat/eggs' but then amazingly have enough money to buy cigarettes or booze or crappy junk food. Or go to Costa del Sol for two weeks in the summer.
It's perfectly possible to live ethically and within one's means. Either eat less meat (which frankly would do wonders for the planet too, given the amount of CO2 produced by animal rearing for meat) or spend less money on other stuff. It's honestly not difficult to do.
Or, at least be honest, say that you don't give a flying fuck about animal welfare and eat your cheap meat guilt-free.