Etherium is at 339.52 USD at the time I started this posting. This is great news for ETH miners. (Edit: it's already over 343 USD at the time of finishing this post.)
Above is a calculation if you buy a 2 year contract for 30 MH/S of Etherium Mining at $842 (with 3% discount code). I used this example because 30MH/S is when you start to get a better rate per MH.
The only thing that can affect mining is difficulty increases. However, at the rate ETH is growing...I believe it will be profitable. The best part is you can convert your Etherium Mining power and allocate it to STEEM directly in the Genesis Mining Interface. This means you get your daily payouts directly in STEEM!
Genesis Mining: https://www.genesis-mining.com/a/810583
Use the code eA75Ps to get 3% off any contract, even the minimum purchase.
You can use coinbase to buy BTC, ETH or LTC to use for purchases on Genesis-mining. This will allow you to get your daily payouts right away. Credit cards take time to verify...although your hashpower will be active immediately. I like to see my payments right away...so I always buy with ETH or LTC.
Coinbase: We both get $10 free BTC if you sign up with this link below
https://www.coinbase.com/join/590a9707042916080822d219
Feel free to ask me any questions in the comments. I'm here to help!