They have almost 100,000 ebay feedbacks, so they are not new kids on the lock. They might have been permitted by Canon to have a one day sale, and had a target of 120 bodies that they were not going to meet. That could explain the drop in price.
The price is going to drop as Christmas nears and sales of expensive items are slow. Canon's fiscal Year ends December 31, and they will want as good of sales numbers as they can get. The last thing they want is to report to stockholders that inventory is high. They want sales in order to keep factories churning. It sometimes costs more to slow production and lay off employees than it does to reduce prices.