Answer:
I am the hole in the night, the ever watchful eye. I return in a cycle, to enlighten the sky.
When I live I cry, If you don't kill me I'll die.
A device for finding furniture in the dark.
What is it that no man ever yet did see, which never was, but always is to be?
What can be heard and caught but never seen?
I am free the first time and second time but the third time is going to cost you money.