Will COSS reach $50 this year, any hope?
This depends on 2 things:
1. Bitcoin bull market enduring in 2018 after this dip
2. Trading volume at COSS Exchange growing dramatically (needs engine update + fiat pathway)
We can always hope

At 3 billion supply, it will be $50/COSS
That's 3 times as much as Binance, which is the largest exchange currently (just surpassed OKEx according to coinmarketcap).
So unless COSS comes up with some revolutionary shizzle or DEX become incredibly popular and all go 5+mil/24h volume, we won't see COSS at $50.
Also, COSS has a bit less than 1/3rd coins in circulation. If all were to be released it would be worth 10bil market cap.
A lot has to happen for COSS to reach that value. It's not impossible, but $10-$20 is more realistic in 6-12 months.