The one way to buy it is in Indonesia. Bitcoin.co.id
But it's 20% more expensive there.
Anywhere else?
We are located at Indonesia, Singapore, US.
(by fiat of course, otherwise there are tons of options)
You can buy bitcoin in exchange sites like Binance and KuCoin. But if you are in United States you can buy in coinbase if I am not mistaken. I already tried the services of Binance and KuCoin and so far they've done really well. I am not from U.S so I haven't tried coinbase.