when more and more ico become to a scam project. new investor can't belive in the new project and no invest in any ico. That why the price of ethereum down and down more everyday. Hard to know what is the lowest price of ethereum because if i know it, i will never tell to anybody. haha. i will buy more and more if that is a lowest price.  Belive me, mate. The price of the ethereum can lower than today, i think it down to 150 before recovery.