You can also buy jeans for £2 made by some children in some far off seat shop. You can buy chicken for £2 kept in prisons and who have never seen a beam of sunshine in their lives.
Why do people feel smug by buying an airline ticket for zilch and their mates are paying proper prices on another carrier. Where does this feeling of superiority one from. Someone has had to pay for your cheap product. There is never something for nothing. Let's all go for dinner at McDonalds and not the local bistro.