http://www.roughtrade.com/search/sigur%20ros
they're both there, readily available for pretty reasonable prices.
http://forums.stevehoffman.tv/threads/sigur-ros-2013-vinyl-reissue-on-pias-germany.308037/page-2
dude on this board even took an instagram picture of his copy of Agaetis Byrjun that he already received and says it sounds awesome. miiiight have to order before the end of the evening. can't imagine i'm the only one.