wait until the end of the year I think ethereum's price will go down again and it's better to buy it at that tim.
And ethereum will also do hardfork in 2019 in January with a 1: 1 ratio because if you want to have that hardfork coin then buy ethereum
It is great if you have $ 2000 to invest if I have $ 2,000 invested. I would buy ethereum because the current price of ethereum is appropriate so I can invest in long term.