Couple of questions:

1. Can I today spend ~$17 and get a bitcoin ?
2. Current world GDP is ~$60T. Assuming in 20 years from now we have same GDP and 0.001%($600M) of it is traded as BTC(I am trying to be an optimist here) and BTC converge to 21 million coins..
   Will the value of 1BTC=$600M/21M=$30 in today's dollar ?