Make sure you are also carrying cargo to trade. You should be running both missions and cargo at the same time. You can also tractor in good from the ships you kill and sell them to.

i see... man that requires alot more time to plan my routes. any more suggestions?

dont be a chicken and take those low paying missions

take the ones that pay the most, its still pretty easy

Not sure exactly where you are in the SP missions right now. But, if you're not past the part where Juni tells you to go see your old friend in Leeds and upgrade your ship, it would be a good time to buy a freighter and do enough runs to sock away a couple hundred thousand, plus buy the best fighter you can at that point!

A good run is Optronics from Planet Leeds to Planet Cambridge, then diamonds for the return trip. You can even get the freighter at Planet Leeds.

Good Luck!

thanks for all the advices! anyway... i can't find Optronics at planet leeds... izit a mistake? and i need more trade routes between these planets, Leeds, London, Cambridge and Freeports... thanks!!