Possible Solutions:

1. Allow direct trading of .moar files between alts, outside of the realm of the Auction House

2. Disable alts from bidding on their ‘own’ auctions.

3. Simply let it happen, since anyone that built up a high enough main character is simply taking a shortcut if they ‘power-level’ their own alt. Also, nothing would stop two friends from trading back and forth with their own alts to cirgreat timesvent any of the above solutions, so there’s really no point in preventing a single player from doing it.

Only possible solution? Completely anonymous auctions. No customization allowed of the title & text of the item for sale. No seller name, no bidder name, no immediate update of bids, no immediate posting of auctions. Have all new auctions post simultaneous (once per hour), and have all bids post the same way. Make it so that all bids have to be a rounded off predetermined number to avoid people tracking their bids (i.e., 105,000 flezz in stead of 104,756 or 105,834 flezz)

And even that’s going to be a pain in the bum to manager, I’m sure, and someone would probably still find a way to cheat the system.