We first heard of Blizzard's plans to improve the functionality of the Mobile Armory [Free] app to include access to the auction house back in February. MMO Champion has all the details today on the recently released Remote Auction House functionality of the existing Mobile Armory app which currently only works for a small number of World of Warcraft servers as part of a beta test of the service.
To use the Mobile Armory you will need a World of Warcraft or Battle.net account, with most of the features requiring an active World of Warcraft subscription. If you're lucky enough to play on the hand full of servers currently supported, using the existing Mobile Armory app you will not only be able to buy items on the in-game auction house, but also sell any item from your character's bags, bank, or mailbox as well as manage all the gold generated from said auctions.
Currently, this functionality is free but limited to 25 total transactions a day, a number which will be increased at launch, according to Blizzard. At the conclusion of the beta test, the auction house features of the Mobile Armory will split in to free and paid functions. Without paying for anything, you will be able to browse and view the auction house along with getting real-time notifications when your auctions sell, expire, or you are outbid or win an auction. For $2.99 on top of your existing WoW subscription you'll be able to do all the buying and selling mentioned previously.
Towards the bottom of the new Remote Auction House site is a chart that details the feature differences of the two subscription tiers.
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