So, I found a reasonably priced book on available through one of their external sellers. Said seller is in Florida. As always when ordering such things I got three emails confirming the order: Amazon confirming the order; Amazon confirming the payment to the external seller; the external seller confirming receipt of the order. The odd thing is that the external seller sent me their confirmation message in Japanese. As this is a prolific external Amazon seller, whose trading name I vaguely recognise, I can only think that I’ve ordered from this seller via (with whom I also have an account, of course) and their system somehow managed to tie up the two separate accounts – not difficult by any means given I don’t try to hide my identity particularly on these transactions, but it would take some work since the and accounts and indeed stores are separate entities.