Hello!
I live in Bochum, Germany. It is not far from Wuppertal and I have a student ticket, so I can easily use a train or any other local transport to get there.
Here is the list of the days in December when I am available for this job:
08.12.
09.12.
11.12.
12.12.
14.12.
15.12.
16.12.
18.12.
19.12.
21.12.
I estimate 20 minutes of my time as 5$. My way to the designated location will take from 1h 50m to 2h 20m, depending on when I depart and wheter delays on the trainline to be expected. So, you can just multiply this time by 2.