If you don't need to buy right now, I would recommend CDNN Investments (http://www.cdnninvestments.com).
My Benelli M1S90T was $689 from them back in 1998. New post-ban gun, ghost rings, 18.5" barrel, 3 choke tubes, straight stock, 7 round factory extension.
Thing is that they generally stock "closeouts" so that's why the prices are so nice. I got their most recent catalog and they are not stocking Benellis or Remington MM's -- but keep your eye on their ads in SGN and TGL and you might get a great deal.
Justin