DakodaKid,
Good luck, if you find one let us know.
My understanding is Benelli goes to market differently than most gun manufacturers. They don't sell to wholesalers, they have their own dealer/rep distribution network. That allows Benelli to better control the retail price on their shotguns. Which is why the price on Benellis is almost exactly the same wherever you look. If a dealer tried to lowball prices he'd loose his contract with the factory.
This of course is all to the benifit of Benelli's and the dealers' bottomline (though it may help to ensure high quality, since they have a guaranteed profit, and hence no need to cut corners). That's the down side. The up side is they still make the best semiauto shotgun money can buy.
However, there are a couple of online places that sell barrels and accessories at (somewhat of a) discount. -- Kernel