Cost of plastering and sanding GK

Good morning

Can someone roughly tell me what to roughly estimate for plastering and sanding drywall?
The whole thing in a quality that only needs to be painted afterwards.
A total of about 400m², mostly large areas.

Thanks

Olli

Good evening,

I would do my ± € 10.00/sqm incl. material in your area.

Rhineland regards

oh ha... thank you
I did not expect that now.
Sat. someone is coming to take a look at it.
Then I will decide whether I should do it myself after all.

Olli