Your 900 goods should be for sale for about 80k Gold, Since the price of the goods will not profit anyone, nobody will buy it. But you can still make money off of it if you purchase your own goods from the TC and then sell them to the fief instead of putting them on the TC. As other people have said already, you would pay taxes twice but you do net gain money.
Example: 900goods, taxes are 5% for buy fief and 5% for sell fief.
You should have sold for 900 goods for 80k silver but put up on TC instead.
So you can purchase your 900goods from TC paying taxes for (80,000*1.10)=88000silver.
And then you can go ahead and sell those 900goods to the fief as you had originally planned for 80000silver. Remember, you purchased those 900 goods cheap from a buy fief and planned to sell it to that fief for 80k. You only lost 8,000silver from this mistake. I did this on the last strat map, I had very little silver when i did it too, If this is the case for you, you can buy 1 at a time from TC and then sell it to the fief. (or 10 at a time or 100 at a time). Repeat until there are no more goods listed under TC. ~this happens because the moment you purchase the good from the TC, you are literally paying yourself.
