Thank you!
Good idea about ability to see the result of bargaining. Maybe I can color the result amount to green or red hue based on the success. Maybe even use different saturation of given color to also indicate how good/bad it was.
As far as for the visual indication during bargaining, there is already color indication, where the panel get briefly colored to red or green based on the result. But it might be too brief to actually notice so I might make it more visible.