Im actually surprised RingCT hasn't had any effect on price, but I'm in for long-term investment anyways.
I could definitely see a price of $50 to $100 in a few years from now which would be a great return on your investment, even if you bought today.
If Bitcoin can hit $1000 I don't see any reason that coins like Monero and Ethereum couldn't hit that price point.
IMHO, the RingCT feature is already probably price-in.