Buying bitcoin right now is not smart move. $900+ a piece is huge amount. You could loss your money when it drops. Usually $900 - $1000+ is the price people actually like to dump their btc. So buying right now is not suggested. Profit is not good if you buy at this price. You should buy some when the price is low.
If ones plan is to make a regular earning with the buying and selling process continuously without any interruption then even $900 is a good price which seems an affordable price tag.