Common Market Score info (Little Upsilon)

Where can I find where the Common Market score is explained? My International Trades section is in the negative so I guess I'm penalized for selling on the International rather than Common market. However, I've read that it's not good to trade too much on the Common market. So if it's not good, why am I penalized for not doing it? I'm missing something.

Sorry if this is a stupid question but I haven't had enough coffee yet this morning.

Lily on LU/Catalina

Since I left doing business with the common markets, my profits have soared and my financial index has risen well. Still in the top 100 which is good enough for me. Have been playing since eary August 2011.

Dont look at it like you are penalised slipstream, they are just extra score point you could get if you were to trade all in contracts. Sometimes it might just make the difference between first and second place but very rarely it matters. 200 extra points is not enough to worry about, and as Mr Freeman says, common markets do little for your profit.

Well that sets my concerns to rest. Thank you both!

I only use common market for space port goods

the reason its generally recommended not to use common markets... is that if you don't know what your doing, you'll end up paying 2-3 times as much for supplies, with no real benefit. so you'd be paying money for nothing.

Ahh, for quality variations I guess. I'm still learning about quality and the other zillion adjustments needed to keep a country afloat. It helps that people like ya'll take time to help newbies. Thanks.