Actually I find it too expensive, if less people join in, the more one has to pay per head.
Berlin has so many photo opportunities, that we do not have to pay that much.
I found for example \"Schöneberg Südgelände\", an areal completely enclosed by railroad tracks. The area has been released back into mother natures creativity only, with an abandoned old steam locomotive, birch trees growing all over the old tracks and other rusty rail equipment.
The birch trees and other trees and shrubs should be at the peak of their autumn colors by October 8. An extra free bonus.