Right, but he's not asking if you would sell at a premium over today's market price, because as you said, everyone obviously would (and then most of them would buy back the bitcoins at a profit--I certainly would). He's asking what the fundamentals currently indicate as to what the "correct" price of a bitcoin is. So, if you would sell 50% of your coins tomorrow if the price hit $150, then that's your answer. If you expect you'd wait until $500 or $1000, that's the answer. It's a question of what would the market have to be willing to pay for you to sell your coins.