Yes, this Ebay promotion is for all users even those of us that use a third party. IT should be reflected in your seller account/invoice on Ebay. The estimated fees page here on Auctiva does not change to reflect every sale Ebay has otherwise the auctiva people would probably go nuts trying to keep up. .lol.
Just keep in mind that 10 day auctions set up today or tomorrow will end the Sunday before Labor Day or on Labor day. I am not doing because of that as I have a lot going on that weekend and don't want to worry about EBay stuff.
Hope that helps!