I emailed Butterfly Europe and a Fred Lange sorted out not one but 2 authorised suppliers for me.
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P.S. Why aren't they playing with the G40 as opposed to the one in your pic. I didn't think much of it - even the improved version. Expensive ball to train with since they don't last - plus the bounce is low. On balance I'd recommend a 2 star Nittaku 40+ from tt-japan as a training ball and adjust on the day for whatever ball is being played with in a tournament.