I'm one of the few exceptions. I recently bought an F4 that I'm very unhappy with, but maybe I was just expecting too much.
As far as shipping, even just across the border to Canada, I found them to be very expensive (even before the customs and handling charges).
I went with the cheaper option, and true to their word, it took 21 business days to arrive (5 weeks).
What gets me is, you can get 2nd day shipping to Alaska or Hawaii for 1/4 the price they originally quoted me.
All said, not a very pleasant experience, and I likely won't be back.