about 3 months, there has been a lot of fluctuation causing the price of ETH to drop dramatically. At this time Should hold ETH ? Can ETH price increase again 1k3$ again in late 2018 ? 
Ethereum is a good coin, but the problem is that now it has been lowered in price by major players in the market and this is a problem. Perhaps six months later, the price will recover after a major update developers, but so far the price is low.