What is the fair price, but I would like to see opinion from some more experienced member?
Comparing hash rate of things like LTC (converted to BTC) to that of GRW, you'd be looking at 250 BTM (0.250 BTC) per 1000 GRW minimum. Otherwise it's more profitable to just mine LTC and trade it in for BTC still.
In short time perhaps, but in long the price will grow up since the small number of coins even than LTC.