I just traded IOST on OKEx but it seems that I can't deposit about a few hours ago. Anyways, Binance is a good alternative as it is the top trading exchanges as of today. Well the last time I check its $0.05 and its already giving us 5x if you started to invest on it at ICO price of $0.01. The price is still a steal for everyone as the project is really solid and the devs behind are working this ass off to make this the next big thing. I'm pretty sure that if it is listed to other major exchanges, the price could take off in the next couple of months.