I just got an email from Westfield saying that they were not going to offer their new Eleven kits in the USA after all. Here's the note:
Thank you for your email.
Unfortunately At present we are not covered by Product Liability Insurance to supply our kits into the US. We had very serious talks with our Insurance company here who initially said it could be done, but alas it can not.
Sorry for any inconvenience this may of caused and I hope one day to be able supply the US again.