You can report someone for inflating postage, accepting or refusing to accept certain payment methods, fee avoidance, fake items being sold as genuine, or other eBay rule violations. There are no rules against an excessive BIN, reserve or opening bid price, even an extreme one. Obviously, in an actual auction situation where the price has soared far above "true value", there's nothing you can do since at least two people seem to disagree with you as to the item's actual worth. And, since bidders and buyers are now pretty much anonymous, there's no way to contact them and educate them otherwise.
Or, as the pointy-haired boss in Dilbert says, "There's no law against optimism. I checked.".
