Hi
The Van is a single crew plane here so not much for a Van FO.
On 206 generally you would get about $500 US untill you are over 500 hours total time, $750 to 750 hours, $1000 to 1000 hours and $1500 to 1500 hours, which is when you would convert to the Van which pays about $2500 for a new convert.
Not sure what people are paying for senecca etc.
Best
Crash