When I was on the Corvette Forum, we tried to get Sal (Zaino) to do the same thing. He agreed but the best he did was throw in some free applicators. I think that you'll have limited success in getting any substantial discount.
Sal has also set a system of regional distributors. They keep stock handy and can delivery on a moments notice. Sure beats having to wait for a UPS shipment.
You might want to look into this as an alternative.
As MJCHIP alluded to, many on the CorvetteForum use Zaino - and many use regional distributors to acquire product. If interested, then I'm sure one would get a fairly quick response here: http://forums.corvetteforum.com/zeroforum?id=10
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