If that was the case they need to drop the TBD. Impossible to get an accurate idea of how many they can potentially shift.
I know a lot of people, including myself, were waiting for an edition size before ordering.
Just set the ES, on pre-order, at a number that will be profitable. They will sell eventually barring any crappy Q.C.
A large edition wouldn't stop me ordering but it's pointless jumping in with no set number.
I just wait for a monthly $20 to work before securing any Exclusives I'm after.