Thanks Dan, Eric will be there with product, but most likely won't be part of the 15% discount: that's only for forum members, so the majority of attendees won't be aware of the Labor Day Sale.
He usually gives discounts and deals, but hard to say on what and how deep. I figured I'd stock up on the heavier items (like gallons) to save the shipping costs. We'll have PA sales tax to deal with though, tough call.