Pardoux said it would be like BP which is not like what i meant.
Let me describe my ideas which i don't think can be abused. Please reply if you have an idea of how this can be abused
Auction House Backpack:
-1 Auction House Backpack for each Auction House Slot or pay for each slot until 100 is reached.
-Cannot store items in Auction House Backpack.
-Item stays in the Auction House Backpack until the item is retrieved by the owner.
Other alternatives:
-Fills your backpack with auctions items before filling Mailbox.