unlike you lucky lads with your NHS, we have to pay monthly health insurance premiums. I can't even bring myself to tell you how much it is per month, let's just say it's sizable. Employers offer health insurance (with employee contributions) but since I'm self employed, I have to pay the full whack. luckily my crafty accountant finds ways to minimize the damage at tax time.
Food at the grocery store can add up. We don't go out to eat that often -- maybe dinner 3-5 times a month -- but tend to go to decent restaurants where it's easy to drop $90-150 for two.
I don't buy much vinyl or cds anymore, but still some. I go through phases where I spend on clothes, but $100-300 spent one month is usually followed by six months of none.
My family who live outside NYC save a lot more than we do, cost of living for everything is so much lower: food shopping, home prices, etc. Probably similar to London versus the suburbs/countryside. But we don't own a car, which sucks up $$$ in gas, insurance, repairs, loan.