I went to Comic Market #60 this summer.
Crud, some of that stuff is sold out before 
the event even opens to the public!

Usually it's the pro stuff that sells out the 
fastest.  The chara designer for Rune Soldier 
Louie sold out a few minutes after Comiket 
officially opened(people with circle passes 
bought em out.) O_O

One pleasant suprise at Comiket 60 was that
some really popular circles issued re-prints.

Koushi Rikudo and Utatane Hiroyuki did. =D