I only see 1000 on offer at 99 cents now. 100 at 2.50 and 100 shares at 5$. Just as someone can drop the share price from 99 to 12 by selling 30 shares, if someone did a market order for 1200 shares this would hit $5! If someone did that, I bet it would wake up other owners of the stock and lead to a lot more volume.