Auctions are disallowed because of immaturity and the overflow of reports of, people not getting the item they bought, sellers not getting their money,etc. Maybe in the future EMC will be able to host auctions again.
Well, auctions are banned, but you can still set a price for the pickaxe and sell it at a shop in your residence Just put the price you agree with any buyer
So did i And actually a friend did also, we are planning on making an external website (just as emcshops.org) for people to auction in there