Beware again:
I recently purchased my new iBook at a local dealer (not an Apple store). They were supportive of my decision and answered all my questions, however, they would NOT let me leave that store without purchasing THEIR service plan. Not apples plan, THEIR's. It was crazy expensive, but I understand now why they were doing it ... no profit from the Apple sale, however "if we sell him this service plan, that's $$$$ directly in to our pocket and odds are we'll never see him again!"
It almost seemed as if they didn't want to sell me the computer without selling me the service plan...
I use a credit card for large purchases like this, but have set my limit on this particular "large purchase" card to $2000. I used that to my advantage, stating that I buy it if I had enough money (yeah right).
--Nick