What happens, I think, is:
1) They print millions.
2) After the initial hype, they become worthless.
3) People don't take care of them since they're worthless (ex. longboxes full of them, jostled around, getting bent, no boards, thrown out or given away, etc.)
4) The number of high grade copies decreases until those become more scarce.
5) When the demand for the issue starts rising, people realise that it's worth something.
6) The 3 milion high grade copies that once existed is down to 800,000 high grade copies.
Although the remaining good copies of the comic still exist in huge numbers, a lot of the extreme excess that speculators bought (ex. 100+ copies per person) has effectively been ruined.
Great analysis. And..I think that all combines with 'pump and dump' sales to create panic buyers.
Print run was not that high really for these books. I can't find it in the Copper thread right now, but I was surprised how low it was compared to the Death of Superman.
http://comicbookspeculation.blogspot.com/2013/10/undervaluedsuperman-man-of-steel.html