The Trading Post is now live on EU servers, but as of the time of writing, vendors are missing the Crimson Glimmerfur, a red fox mount.
The Crimson Glimmerfur was revealed by Blizzard as one of the December 2023 trading post rewards.
Right now, the mount is not on Trading Post vendors, but it can be seen in the Trading Post stable.
According to Blizzard's announcement, the mount should cost 600 Trader's Tender. If you're hoping to purchase it, it's probably wisest to hold onto your tenders for now, as this could still be hotfixed.