Needs to be updated?

I dunno. The cost of 1 of the items by itself was 823. But I wanted to test it out a little bit so I did a run from Dunby to Tir carrying as much as I could. I made like 114,000 Ducats when I got to the other side and yet only satisfied the "1,000 or more" requirement. I find it very odd that it's doing that to me.

Oh, I see.

The requirement is that you profit at least 5,000 ducats, not receive at least 5,000 ducats.

You must divide 5,000 by the profit (number in red? blue? i forget), not the amount it sells for.

Number in red = ^
Number in blue = V

So, divide 5,000 by the number in red. And yes, the calculation tip works for me as well.