I have a dealer here in Seattle that I always try to maintain a good relationship with but there is a dealer in Oregon who sometimes beats their price. You are probably going to have to pay shipping from ETC to your theater on a purchase like this, so the location of the dealer isn't particularly important.
First check with local Dealers. HEY "SOUNDLIGHT", "Raabid" is also in NC, so tell him where to shop in your part of the country.
Secondly, try some of the larger national and regional dealers. They may be able to give you a lot better deal. Try the ETC dealer page above and give our forum sponsor a try as well. I doesn't hurt to ask. You never know what you'll find.