Now it's going back up to $600 again. Why is flucuating so much in last few days from $20-50 difference.
But price of bitcoin is increasing now and I expect that it can increase to some price between 800$ and 900$.
We may see that price few days ahead of halving, and I think that would be the best price to sell some coins and grab the profits as we don't know what will be the price after halving.
The price is starting to rise again, it just fall back a bit to scare the weak hands and to give the intelligent people or holders the opportunity to buy.