As a result of Bitfinex margin call cascade, ~$450 reached. Whether we go down further or not, I consider that deep enough to qualify as a "dramatic selloff" as predicted by masterluc.
Another plus point added to his already excellent record.
No no, we haven't seen the worst of it yet.
We may hang around these levels for a bit and bounce up a little even, but the worst is yet to come in the next few months...