The perfect market would have seperate statistics for Domestic and International Orders.
Many vendors will stop sending packages internationally because they dont want to ruin their stats, but if a market had Feedback for Domestic and for International Orders seperately, then the vendor would have no fear at ruining his domestic market by internationals.
Similarly feedback simply does not work for most International customers (And I'm talking about more international than just within the European union) Feedback should be able to be given, as well as an ANONYMOUS option to write "Received" / "Not Received" - Then users could look at the statistics which would not be influenced by vendors refunds, threats ect as it was anonymous. The stats would show something like "99.9% Domestic orders received, 85% International Orders Received"... Sure vendors will now say that other vendors will fuck up their stats, but this will be a even playing field.
Good points.
I don't know the answer to this, but would the perfect market encourage risky, escrowless international shipping across borders where you wait for weeks?