Some feedback in case you do ever revisit -
The computer should have some delay to responding. As it is, the AI ships things the instant they come in demand, before the good is even visible to the human player. This means it's impossible to actually compete. You can't win by skill (though you can lose through lack of it) - you can only win by being luckier than the AI. Once you realise that it becomes an exercise in frustration.
You should probably also limit the starting countries to ensure a fair-ish amount of connections - who wants to start in Ireland.