World of Warcraft WoW Tokens can now be redeemed for a brand new currency called Battle.net Balance, which can be spent in other Blizzard games. You can use your Battle.net Balance to buy a loot box in Overwatch, for example – it’s already one of the drop-down payment options.
Each WoW Token earns $15 Battle.net Balance (region dependent). Remember, each WoW Token costs $20 if bought with real-money from Blizzard. The other way of getting one is through the in-game Auction House, paying in-game gold.
In other words, WoW Tokens are something to spend an amassed World of Warcraft fortune on, and in return, time-poor players get a stack of in-game gold – a legitimate way of buying gold.