Michael: See Mark's post regarding Gatecrash. If Massdrop are unable to get a Gatecrash box for any lower than $103 - not a financially viable price, and realistically more expensive than is available elsewhere - is it really that likely that Massdrop would be able to secure a group buy for Dragon's Maze, a newer product, at a lower price? Because - again - it would need to be lower than $103 to be financially viable.
So, is this likely? No, it's not. Whilst I share your chagrin at members seemingly religiously voting up Gatecrash in every possible poll, 2013, Dark Ascension, Avacyn Restored, Inistrad and Return to Ravnica are the way to go. Considering that Return to Ravnica and Avacyn Restored have both recently seen a group buy, Inistrad/Dark Ascension/2013 are the most viable choices. Potentially just Dark Ascension, if we consider that Inistrad and 2013 are soon to rotate out of Standard.