You have LOTS more influence (752 to 0), does that have something to do with it?
Yes it have, I know "why" it does it, but it should be capped before the point where my 40 units of iron is worth 250% of her 40 units of iron.
I honestly don't like the point that influence changes the values of trades though, really makes trading either useless or really beneficial.
I spent the entire game trading all the enemy's gathered influence (for my research points) to see how stupid it would get, and seems like it caps somewhere around 250 influence to zero. (Random Guess, I just know a big chunk of my influence is just for show).
Sincerely
~ Kongdej