At first sight, yes. However there are some factors that you don't seem to have considered:
-Exchange fees and fees for dealing with fiat.
-The amount of time that it would take each time and the fluctuations in the prices during that time.
-The spread between the buy and sell prices.
Often with less trustworthy/reliable exchanges like Cryptopia, there could be issues as well. Often with arbitrage like this there are a lot of things which result in a big delay for you doing this, and you don't get as much profit as you expected. However, even a profit of 5% would be giant from any normal measurements. Good luck.
The fee indeed is very damn fucking high.
but i can buy USDT for it.
technically i will buy USDT first then transfer it to crpytopia buy btc and transfer it again to my country BTC market.
USDT might be the answer of fee.
USDT only cut me off 0.5% off fee
then withdraw money from my country is damn cheap only 25k IDR change it to usd it least then 2 dollar
Price UPDATE 6/4/2017 6:25 PM GMT +12 Indonesia
Crpytopia Market : 2388 USDT
Local Indonesian Bit coin Market : 36 million IDR transfer it to usd : 2716.22 USD transfer it to USDT : 2.637
Proft : 14.123% per transaction.
Please give me a advice about this.