I think I'm selling mine when they go under 400$, which I hope will never happen, but might even happen today the way it's going down now.
On the other side I think I will sell them at around 900$
price now is pretty large, 550$, but i won't sell my bitcoins yet, not because that price will rise soon to 600$, but because of price rise after halving, i will sell my coins then only
because price then will be 800$ or larger, and if people won't stop buying bitcoins now,it will be even larger, as some people predicts that price will rise to 1300$ and more