it better to put at bittrex.
People selling their bounties for a cheap price, some people just want fast money, don't matter the price (don't ask me why).
The wall of 6-7 bitcoin of 9000 satoshi for 1 Incent is just a big investor making some money.
ICO price with bonus: 20 to 49 BTC = 15,000 Incent / BTC (0.00006667 BTC/Incent)
He's selling for 9000 satoshi - 6667 = 2333 satoshi/incent profit
So he bought at least 200.000 Incent x 2333 = 4,666 btc profit.
About the exchange: openledger is working fine here, cool platform.