Answer:
I bind it and it walks. I loose it and it stops.
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
What measures out time. Until in time all is smashed to it?
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams, my merest touch brings laughter
What relies on columns but isn't a house, and asks for help but can't speak itself?
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.