Any thoughts on the T5 trade system?
It's clearly descended from Merchant Prince, which seems to work better for space traffic in general than CT Book 3. However, I liked the "roulette" feel of CT Book 3, but I am outnumbered.
Of course, there may be a way to get the Book 3 feel out of T5's Trade chapter. One way is to take the Random Trade Goods tables and apply a base value to major classifications.
The other way would be to adapt Don McKinney's MegaTraveller Trade Variant to T5 - after all the MT version was a direct lift from Merchant Prince and so the adaption could equally apply here.
I have gone over Don's variant (Nice stuff!) and the thought occurred to me, could a merchant charge more for hazardous freight? (You want me to transport 200 tons of Nitroglycerin for only Cr 1,000 per ton? Yeah right, door's to the left)
This is an open debate question, not where is it in the rules of x edition. For that matter I have seen somewhere (most likely non-canon) premium rates for amber zones (danger) and red zones (illegal), the former could be a standard, the latter would be to me more of a negotiated roleplay...
I seem to remember a JTAS article opening up the possibility of hazardous cargoes to make life more "interesting" for the players. This was more along the lines of placing obstacles in the way rather than charging more. It could work in with your idea, though: bad experience, maybe a bad experience that happened to another free trader that made the news, players up the price for transporting such-and-such, vendor complains that all crews have been saying that, etc. Could be a good hook for a story.
You should have a look at the tables in Interstellar Wars. They're the CT tables, but revised. There may be some ideas that you could use.I used some of that article(*), plus the original CT tables, when I created my Trade Tables.
One possibility might simply be to give each of the 14 Trade Good Types a different base price, and then the random roll for "more detail on trade goods" would be part of determining base price.
You should have a look at the tables in Interstellar Wars. They're the CT tables, but revised. There may be some ideas that you could use.