They were bought between 5 and 30 USD.
Sell when everyone is greedy!
How much did you get (profits) from those coins? If you don't mind to share.
It's just $900, not good enough I think, you should sell it out at $1500-$2000 or when you don't have any savings anymore to pay the bills, then it's okay to sell. Well, everyone have their own decision.
if he have 10000 bitcoin and he already sold for half, its mean he sold 5000 bitcoin and if we calculate with the price $900 x 5000 bitcoin then he gets $4,500,000, i hope my calculation is not wrong. i think he become a rich person right now, and for the other half bitcoin, he can wait for $1500-$2000 and i am sure he will be double the profit.