With all the good news coming out in favor of bitcoin like
Expedia accepting bitcoin etc it's time to buy with the price going down. You will not be so lucky next week. I strongly believe it's going to reach $700 by end of next week!
Yes it is still a perfect time to buy for bitcoins today because the price is still lower & can be profitable for this will increase in price very soon. So if you have money for investment buy for bitcoins.