Can i recommend that we set up like a lottery chat channel on all 10 servers so that people who want to auction things off can put them into the lottery and people can pay for tickets to win the items in it.
I had another idea, please check it, i post it here mainly because it seems like an idea you would like It was complemented by other players and you should read it =) http://empireminecraft.com/threads/idea-new-auction-system-thanks-mrlegitislegit.6086