Here is a chart with how WoW token prices evolved in all regions from April 12, 2015, to this date.
The data comes from WoWTokenPrices, a price and history tracker for the WoW token.
Current WoW Token prices:
US Region: 196,056 gold
EU: 317,062 gold
China: 508,361 gold
Korea: 326,154 gold
Taiwan: 428,476 gold
The Evolution of WoW Token Prices (Chart)
Source: Reddit