I ask blizzard:
can you Supervision on AH.
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blizzard can are you Supervision action house for no more Exaggeration in prices.
i have idea how to do that (no full Supervision):
make on every item in wow can sell on AH,creat item with Average price of all the realms.
BUT the people cant buy this item ( what the GMs put).After you do that, people would have some awareness about the need to pay for a particular item. and no more people will sell in very high prices. BUT every week (when have restrat on raids) blizzard do cheak on The average and fix on every week.
for example
now valor boots cost 11k in my realm
but if The average is 6k (the price blizzard put)
no one people will sell on the AH 11k...

IT IS IDEA FOR SHOW THE AVERAGE.