After examining the website and their blog it looks as though the Muse Essential/Frontlight and the Odyssey Essential/Frontlight are the same two devices, and Bookeen just can't decide which is the correct name.
Also apparently
THEY HAD AN OUTSIDE-EUROPE SHOP ALL ALONG, or maybe it only just appeared, but in any case it doesn't actually have the link to it anywhere on their website except in their response to somebody's comment.
EDIT: Only, it appears to ship to any country outside Europe that
isn't the US.