If you know me, you can. You will have to send me 100% of the amount in BTC as a guarantee. I can buy in any exchange as I have money in all of them. For a fee, of course. The ones doing this will make a killing tomorrow as they did today, irrespective of what happens to the price.

I don't believe it will go sub-$20. I am not the only arbitrageur out there. Everybody wants bitcoins. If you don't believe me, sell yours to me.