My opinion is that I really don't understand why commodities where added to the game at all!
I mean, THIS way.
Everybody says that you make more money by shooting down enemy ships and savaging the cargo.
Even if you don't like that you can ship cargo on request by the various guilds.
So tell me why should anyone do commerce that way??
1) You don't have a better profit
2) It's more difficult to sell things
3) You don't take mission experience points!