You can purchase ARAGON from these places
Go to Bitfinex
The largest and most advanced cryptocurrencies exchange
Go to IDEX
IDEX is the only Ethereum decentralized exchange with real-time trading and high transaction throughput.
Go to Bittrex
Bittrex is one of the larger crypto to crypto exchanges offering a large number of trading pairs into bitcoin - including all the major cryptos such as darkcoin, nextcoin and litecoin
Go to HitBTC
The most advanced cryptocurrency exchange to buy and sell Bitcoin, Ethereum, Litecoin, Monero, ZCash, DigitalNote, Ardor.
Go to Livecoin