Studio dies and the cutter itself can only be bought direct from AccuQuilt, shop when they have sales!
A MAJOR plus for the Studio is that all the dies for AccuQuilts AccuCut (Grand Mark) work with the Studio. Most of those are applique shapes, but they have everything under the sun.
So you can pick not only from the Studio dies, but these as well:
http://www.accucutcraft.com/
and
http://www.accucuteducation.com/