Not all IEO are launched on Binance, Kucoin, Gate, Houbi and Okex have higher price than IEO last with IEO on binance have lower price until today, just lucky when you invest with IEO but shit exchange market give bad result with your IEO investment, higher chance if invest with IEO listing on Binance, Bittrex, Kucoin and Gate if looking serious team for buy back after price if down.
Yes, not all IEO is launched in good potential exchanges like Binance, Kucoin, Gate, Houbi and Okex etc. See already the price of IEO's in binance increased and later the prices have fallen to the lowest value. The same thing happened with other exchanges after their IEO's the prices have fallen to a lower value, sometimes it is unpredictable in this crypto market.