I personally hate haggling, but I do appreciate the raw efficiency as opposed to arbitrarily set prices. Maybe the ideal would be some built-in automated haggli

I personally hate haggling, but I do appreciate the raw efficiency as opposed to arbitrarily set prices. Maybe the ideal would be some built-in automated haggling: you set a desired starting price, and a private "red line", and the prospective buyers do the same. Then the bots can haggle and maybe dynamically update the prices as they discover more information about the market.