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 $700 by end of next week!
Sadly, current price is mainly based on speculation, but not an adoption. Therefore, we see these massive swings. Like 30000 BTC being sold on 27th of June and all the speculators started shorting, hence the price goes down... No price definnetelly wont be 700$ untill this sell of silk road btc ends...
What will happen the price when 200k of gox coins will reach the market?
The perfect time to buy is when all the news about bitcoin is all positive. And I think the perfect time to buy is when the price decrease it's a good oportunity for you to buy because if that case happens you will earn more profit. But always takecare when it comes to buying for you not to doubt in the end.