Hmm, here are the links to the listings in question:
I think someone at Boox has created a second Amazon listing. The first link above seems to have been created more recently. My guess is that Boox USA got a second shipment from China in their warehouse, and whoever was responsible for it made a new listing without checking whether there already was one up. Curious.
(I ordered mine from the listing in the second link above, for the record. It's arriving tomorrow, a whole 9 days ahead of estimated delivery at purchase time! reeeeeeeee)