Yes you buy now while the bitcoin is at $9900 and if you buy btc you will be able to buy you in the popular market and more secure like Yobit, Bittrex, Poloniex and more. And for me you will invest because many say that the bitcoin price will increase in december but it still depends on whether there are many buyers and we do not know what will happen and maybe even drop it.
I believe the main reasons to buy Bitcoin now is because of the price which keeps on getting high day by day, so it would be best to buy Bitcoin to avoid getting late when you won’t be able to purchase even a half of bitcoin. Next is that there is a limited amount of Bitcoin, but that I won’t say is happening now, cause it will happen in a very long time from now. Apart from these two reasons, I don’t see any other reason to buy Bitcoin now.
I also think of that.
If I'am a trader, there's no other time to buy bitcoin but now.
Because of the bitcoin price that is continue to rise.
Maybe the bitcoin price tomorrow is double the bitcoin price today.
So if you buy now and sell it tomorrow.
Im sure you will have a profit.