Answer:
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What do you call a pig that is no fun to be around?
The more you work, the more I'll eat.You keep me full, I'll keep you neat. What am I?
I make everyone blind. You can't see me but I will always come back for you. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?