Wow, great thread! I will put this in the Knowledge vault for the 09-ers!
I think everyone said most of what I was going to say anyway, so here are my 2 cents:
Yes, you can write your first draft in probably 4-8 hours (assuming 500-1000 words), but the refining process is what will take 2-4 hours at a time with each essay major draft, and multiple revisions. If you're not on the extreme end like rhyme (who had like 30+ revisions per essay
), you probably will need at least 4-5 MAJOR revisions until you have a great essay. And these days, you need a great essay to get into a greatschool. So on average 4 essays per school, 5 revisions (3 hours each) and the initial 6 hours to write an essay, that's roughly 80+ hours for your first set of essays. If you're a great writer, then probably 50-60 hours for your first set. Then you need time to let your reviewers read through the essays and give you comments, etc...
The time it takes definitely drops per school, especially if the essays are similar. Like AAu, I'm a STRONG believer in reusing essays, and I know quite a few people on this forum who believes in writing again from scratch. To each their own, but you have to find YOUR style. If you think you are very good at reusing and making each essay sound like you wrote it just for School X, then do that. It'll save you a LOT of time. For example, Berkeley took me about 80 hours for the first set. UCLA probably took about 20 hours because all the essays are essentially the same (80% reuse), except for one 500 word essay (which took 10-15 hours to hammer out, and the rest of the 5 hours is refining the other essays to gear towards UCLA). Stanford took 30-40 hours because of the "What Matters Most" essay, and I reused probably 60% of my stuff.
Kellogg took about 4 days of 5-6 hours each to churn out, so roughly 20-25 hours, because I was able to reuse 75% of my stuff. Only had to add a new story to the uniqueness essay and add past leadership expereinces (so adding 50% to 2 essays). That and UCLA were definitely the easiest.
So that's what, 160 hours for 4 schools. Say you can spend 2 hours a night on weeknights and 6 hours a day on weekends to work on that, that's 7+ WEEKS to get 4 sets of essays out. Granted, I'm not the best writer, but even if you are a good writer, I would still put in 4-5 weeks of work if you want top essays.
And you still need to incorporate student/alum interviews and campus visits and website searches into your essays, so that's more hours spent just to help your essays out. So budget at least 1 month per school and you'll do a great job without rushing anything.
Good luck to you and all the 2009 applicants, hopefully we've been helpful!
EDIT: One more thing, I've had a couple of reviewers say my first drafts for Haas was better than their final draft that got them into Haas and UCLA, but it still took me tens of more hours to get them to my final version. Once you get access to the Essay Vaults and once we put some essays in there (especially our first drafts), you'll see how great the difference is. My first drafts now look like Biryani that's been left out for 3 weeks (instead of 3 days).