icbc arbitration on car's value- need help

[02odyssey]

This is sort of an update to my Oct 2019 post (that you don't need to read).

Collectors 944 S2 1990 Porsche - total loss- icbc is offering me $6000 below my selling price (was selling prior to accident).
Arbitration costs $400 so I'm ok with this.

Does anyone have experience going into arbitration regarding value of car?
Many thanks

[02odyssey]

Nevermind, icbc has countered with a more desirable figure.