Thanks for the info Gandolfini,
I live in Canada and unfortunately none of the UK sellers will ship here.
I do have sellers in the US who do, but most of the time they only have access to the 'US' versions of the releases. I mostly collect cask strength expressions, so the only difference is the volume of the bottles.
I guess it's hard to predict what factors will affect value in the future, but if there's any precedent on this, I'd appreciate the insight.