What do you think, Is it Ripple buy time?
If your answer is yes, then want to know the target around 2018 (almost one year).
If I invest 2k$ on it, how much I can get back from this?
as a basic principle in investment is to buy at a low price. if you believe that xrp will be good in the future it would be nice to buy at the current price. Just do research, ripple one altcoin is still stable in the top 5, and the increase in the year 2017-2018 is very sesnifikan. price stability when all crypto values are down is also good. I myself still leave xrp 1000, I bought at the price of 0.3 $ and still save until now. maybe if you hesitate to invest all your capital you can share with altcoin like advice other friends above. do research and update information to make an investment.
If you really like Ripple, you had to do it several weeks ago. Today this is not the best time to do it. Although I wont recommend you ever dealing with XRP and in reality it is not even an altcoin.