If you've developed any kind of long-term relationship with any retailers in your area that may help in your purchase. I very privately get 20% off from a Gerbing retailer. However, I have been doing business with him for many years.
That, like most anything else, is worked out through personal relationships over time. Most dealers standard (and factual) answer is they never discount Gerbing under any circumstances. I think that is how Gerbing wants the buying public to believe it always is and what Gerbing "demands" of their sellers. That way the dealers and on line guys don't "price war" each other and drive the prices down.