This discussion of special deals, grey market, unofficial Canon dealers, etc., while interesting, is pretty much off-topic.
The original question excluded special deals, rebates, etc. The point being that what an individual retailer may be charging for the 5DIII says absolutely nothing about what Canon's pricing policy is. These prices don't reflect a drop in price by Canon, but simply an effort by individual retailers to snap up a few extra sales. (And quite possibly gouge consumers by "upselling" the customer with warranties, worthless accessories, etc.) Some of the links posted here clearly stated that they were selling bodies from kits that they had split into two, for another example.
These kinds of "deals" are always available with almost every body and don't have any bearing on Canon's pricing policies.
BTW, the D800 is #6 on Amazon's list and the 5DIII #10 as of a few minutes ago. (Both selling at their listed prices). NO, that doesn't mean Nikon is "kicking Canon's butt" or anything of the sort. It means both are continuing to show remarkable sales. Both companies have got to be very happy and there is no reason why either manufacturer should feel any pressure to lower their prices.
Expect some decent deals around Christmas if they need to boost fourth quarter revenues, but don't hold your breath for significant or permanent price cuts.