You can purchase AMO-COIN from these places
Go to IDEX
IDEX is the only Ethereum decentralized exchange with real-time trading and high transaction throughput.
Go to Bithumb
Bithumb is one of the largest exchanges in South Korea, allowing users to buy/sell/store Bitcoin and Ethereum.
Go to Coinone
Coinone provides various blockchain and cryptocurrency related services, including cryptocurrency exchange center and foreign remittance.