(Original post by *R*a*c*h*)
York says the average for UC campuses is $15,500 (with LA and San Diego being more), and they did give us a helpful little chartc comparing all the price estimates (if I can find that, I'll see if I can scan it up onto TSR).
From what I can remember Sydney is the most expensive one to study at ($25,000 estimate), followed by LA with Singapore and Hong Kong being the cheapest options (Singapore, for sure supposedly worked out cheaper than York). I imagine New York was one of the more expensive cities too.
For Berkeley, the big costs are accommodation and health insurance. My accommodation, a co-op includes food (both a dinner and ample supplies to cook breakfeast and lunch) for about $6000, which was at the cheaper end of the accomodation scale and is equivalent (price wise) to a catered hall in the UK.
Health insurance is $761 (2010-2011) per semester and there are two semesters.
A return flight at its cheapest is £500. Times that by 2 if you want to come home for Xmas (just don't attempt to fly to heathrow like I did).
Other big costs are: books - you're meant to buy all these as because of the different exam system you'll need to use them for more than a couple of hours - for History I probably spent approximately $600 in the fall semester on these.
Travelling. I haven't got round to much of this yet as I've been very busy but this can obviously be expensive (and probably isn't included in York's budget).
You probably won't spend half as much on alcohol as you would in York (especially if you're under 21) because at least at most of the parties I've been to good amounts of alcohol is provided. Also, if you're under 21 you won't be paying £3+ every time you go to a club. Some parties (e.g. coops) do have an entrance fee (max $5) but often you can get around it if you come in fancy dress/know people there. Even if you're 21, you will go out to clubs less probably than you would in York - partly because house parties are more popular because of the drinking age/partly because Berkeley has an extremely intensive workload, so people only party on weekends usually with the biggest parties on a saturday night.
The thing I've spent most of my money on surprisingly is actually food. I tend to eat lunch on campus just because it takes less time than to walk home and due to societies/general laziness/a lot of work - if I miss dinner, I'll tend to eat out rather than cook myself. These are all bad habits I plan to curve next semester... Prices in Berkeley (bar housing) are generally cheaper than in the UK and very reasonable - but they still add up.
I'm sorry that's not the most conclusive answer. It really depends on what you're like with your money - obviously you've got to show York in bank letters/balances/loans you've got at least a set amount (about $15,000) but like at York, it really depends on your lifestyle. If you're someone who never eats out/goes shopping/parties it's obviously going to be a lot cheaper. But realistically most people will be somewhere in the middle. I know York estimated their expenses at £10,000 - and so there's not that much difference.
You also pay half tuition fees and depending on your local area - you can claim back certain things.
For me, in Wales, I'm allowed to claim back the difference for up to 3 return flights if they cost over £300. They also paid me back £200 for the costs of getting my visa. It also looks like I can claim back my health insurance with them!
Ultimately, I'd say that York's estimates of the costs are quite accurate though - hope that helps.