I should start by making it clear that there really isn't a lot separating many of these sleeves
At the moment the 6 campaigns released like this are, in release order: The Dunwich Legacy The Path to Carcosa The Forgotten Age The Circle Undone The Dream-Eaters The Innsmouth Conspiracy Mythos Packs : After a deluxe box is released you get 6 Mythos Packs coming out approximately once a month (above are the 6 packs for Path to Carcosa)
Just take a look at these examples between printed cards I made using Photoshop (left, no overlay) and InDesign (right, with overlay): Now you may not need it for your own cards, and thats OK
You can only use each effect of Phantasos, the Dream Mirror Friend once per turn
With the five most expensive being above $20, the top three being all above $30, and the most expensive card in the set is $45
Call ahead, confirm allocation, and get there when doors open Black Friday