I think its late for buying eth right now. I suggest you to wait for buying. But there are too many coins with low prizes you can go with them so you can add your money while waiting. After ethereum prize will down you can buy from it.
Now as late as a few weeks ago ethereum was under $ 400, and a few days ago ethereum got up, now about $ 650. But even so it is not too late if you want to invest in the long term.