It's been a couple of months since your question, but ICON is pretty popular now and could be purchased on Binance, Kucoin, and Bittrex.

Thanks. I ended up getting on HitBTC - though they still have it listed as an ICO token, so can’t wirthdraw - would be an advantage to get it on those other exchanges, as they probably have it as an ERC20 token that can be withdrawn...

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