I personally kinda enjoyed XI's version of the market board. Completely blind, you saw what the price was selling for and made a bid if it matched one that someone posted then congrats, if not then you try again. Sure there was undercutting I am sure but you could never really tell. I have only gotten one angry tell but that was because I posted a crafted primal weapon for I think it was 2mil when the only one up there was at 7mil.