Ethereum at the end of 2018 doesn't reach $ 300 and even reaching $ 200 is very difficult. But Ethereum has shown a positive sales trend and prices have started to rise. And now in 2019, I think the price of Ethereum will start to increase because Bitcoin is also rising.
But you see there is a lot of market manipulation done by the big coin-hodlers. Last few days showed it clearly again. And today now the cash-out and price-dump of around 10% again. I hope these big hodlers will realize sometime, that they are harming the whole crypto-currency idea.

I'm more than sure that in the current situation on the cryptoval market of the perpetratic speculators in, which really risk at the kill the whole market. Here they only think about your pocket, but not about the development of crypto-currency .
I think, they also press down the ETH-price before the contantinople fork to generate insecureness among the small and medium hodlers so that they push out their ETH cheaply and the big guys can buy cheaply.
But as a blockchain - developer with focus on development of the crypto-idea, I am no good trader anyhow.

So I will hodl my few ETH I got until the fork has successfully passed. I think then the price will make a noticeable leap upwards again.