Auction list price limit
Item auction. To stop people from putting items in auction for outrageous amounts (1 Billion chips so that no one buys it, just to show off) put a limit as to how much you can list an item for and let the bidding market deside. Maybe 15 or 20 mil to start

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FlagDUDE08 commented
People can put reserves on auction items all they want; it doesn't mean they're going to get sold. If they want to waste their time with listing fees, it's their prerogative. What if there were some form of an "appraisal" method that helped people to determine what the new and used price of an item is, and maybe allow them to put reserves on items that must be cleared before sold, but start auctions at a percentage of the reserve or appraisal to drum up interest.