Funny story about Memory of Light.
BYU gets the grand opening release of MoL with Sanderson signed editions seeing as he is a teacher there. On his facebook Sanderson had pictures of the first dedicated reader's tent who started camping out over a week ago to make sure he / she got signed copy #1.
I'll be buying MoL on release day but I'll be happy with my unsigned copy. Someday I'll get Brandon to sign it (I live close to him so I've been to three of his signings to date and now have every one of his books signed).