i doubt bitcoin price will keep failing there is a support that stands on 200 dollars mark soo buying them now would mean they have potencial to go up on the next years
Buying it right now is the only good option as the prices are falling down so it is a great news for the new entrants who wants to invest in the bitcoin and we wish that prices should go up in the next years but you cannot be sure that it would become true as market is volatile and so is the bitcoin.
bitcoin below $300 is a great buy. but just don't expect the price to double any time soon. it will take a year or more to happen. just buy and hold.