Another update here.
I ordered an FA 31 @ $773.42 on the 27th. I'm in Australia so I used an Australian Credit Card and put in a mail redirection service address as the delivery address.
On Monday I received an email stating that the credit card couldn't be verified (fair enough as it's not a US card), and that my only option was to pay by wire transfer $1324! (non-sale price plus $25 wire transfer fee)
I spoke on the phone to a nice lady who said she would amend the price if I could forward her my order confirmation email detailing the sale price.
Unfortunately I'm not in a position to pay by wire transfer, only Credit card or Paypal. The lady on the phone said she can't raise a Paypal invoice, so I've had to cancel the order.
I've waited four years to get this lens, and I've gotten so close (even with the 25% devaluation in the Aussie dollar over the last 2 years it's a great deal). If only I'd paid by Paypal when checking out...