US store right now.
Irish, British, French and Belgian is the same warehouse.
EDIT: The stock is not depleted on all the stores at the same time normally. The common case is that the warehouses are getting "sold out online" over time until the articles are removed, reboxed or fixed if it was an error. But, the Sold Out Online is a clue of something is happening.
If you check past posts in this forum you can check how we posted about Be'lakor, Kroak or Battletomes that get Sold Out Online a few months before the new model or book was announced