I don't think we've seen the end of the correction that began today. I'm confident we'll go below $100 before we reach $200 again. Though I don't see it getting anywhere like as low as $50. More like the $80 mark, and not for long.
what exactly do you base your prediction on?
Its far too soon for BTC to re-bubble past $200 given recent events. Even with today's paypal acknowledgment. Too many people who missed the opportunity to sell circa $200 last time won't let opportunity pass them by a second time. The resulting crash should briefly take us sub $100.