For 2018 it may not be the case. 3-5 dollars is the safe place to bet.
All the people turns to invest on ripple since we finds the bitcoin and other altcoins in the market dumped in the chart. So their choice turns to cheap coin with potential and for that XRP would be a right coin to invest on it.
As you faith on it. It may grow or you will find the dump also in this coin. So ready for the anything to face. Most probably XRP will tirnscto 50 cent or maximum 1 USD.