The Taiwan Battle.net Shop was recently updated with two new services, the WoW Token and Level 70 Boosts (which are not limited to one per account).
WoW Tokens and Character Boosts were previously only offered on Chinese realms, operated by NetEase. Following the Chinese World of Warcraft realms shutting down, many Chinese players have found new homes on Taiwan realms, possibly the reason why Blizzard has enabled these services for the region.