Is it possible to tell unity not to render overlapping transparent objects after certain number of times?

Hi,

Is it possible to tell unity not to render transparent objects for example after 5 times. For example if I have 7 tree billboards in front of each other, only fives in front get rendered.

Probably not. Transparent objects need to be rendered back-to-front, but when rendering the object that is farthest away, it doesn't have any knowledge yet about what or how many other transparent objects lie in front of it.